Contents

Introduction

This page lists the various benchmarks, found in the Basingstoke area.

It was first published by Andrew Watten, on 2020-08-25.


What are Benchmarks

Benchmarks are a series of lines, carved into stone or brickwork, that enable a surveyor to measure elevation. Occasionally these are also metal plaques. A much better explanation can be found on Wikipedia. A brief summary of benchmarks can be found on the National Library of Scotland website.


Benchmark Examples

The picture below is a collage of some of the benchmarks we found, in Basingstoke, in 2020.

Benchmark Collage

History of Benchmarks

Benchmarks first appeared in 1831 and the last one was created in 1993. In those 162 years, over 500,000 were created. Benchmarks are no longer used, as elevation is now measured by GPS. This Ordnance Survey page details the history.


Our Search for Benchmarks

During the lockdown period, from March 2020, our family would go for short local walks. Over time, we started getting bored of the same routes and needed to find a way to make the familiar routes more interesting. We decided to start hunting for benchmarks as they were a piece of history, but an often-neglected piece.

I had known about benchmarks since doing a bit of surveying at university, but thought they were only on prominent pubic buildings like town halls and churches. Knowing this, we had already noticed the very prominent benchmarks on the Willis Museum and St. Michael's Church. It was only recently we found out that they are far more numerous and they can be on every other street and in town centres, there can be three or more on the same street.

The first time we went searching, we were disheartened that at each location, we found nothing. Then at the last point on our list, we found one. It was great fun searching, almost like a treasure hunt and we would speculate as to how many years it had gone unnoticed. We did get a few stares from people wondering why we seemed to be staring at blank walls.

On subsequent walks, we would revisit sites where we couldn't find the benchmark and then found it by looking harder. One site took us five attempts to find it and it required us trampling down some weeds to uncover it. As Basingstoke has changed so much over the years, a great number of benchmarks have been destroyed. However, some have been destroyed quite recently and I believe they could have been preserved, if there were more awareness of them. This is one of the primary factors for creating this page, which is to raise awareness and preserve those benchmarks that remain.


Benchmarks on Maps

Benchmarks are listed on Ordnance Survey maps and many pre 1960's maps can be viewed online on the National Library of Scotland website.


Benchmark Map Icon

Benchmarks are shown on a map by way of a little arrow mark. Next to them will be some text describing the benchmark, like BM.295·94. The BM. stands for Benchmark and the 295·94 stands for 295.94 feet, above mean sea level (Newlyn datum). In the 1960s or 1970s, the measurements changed from feet to metres. The image below shows an example of a benchmark icon:

Benchmark Map Icon Example

Benchmarks Listed on This Page

When we started looking on the maps for benchmarks, we found the more we looked, the more benchmarks seemed to reveal themselves. Each map revision showed that some benchmarks seemed to move or disappear. The different map scales also showed some locations but not others. For these reasons, we decided to initially limit the scope to benchmarks within walking distance of the town centre. When we started making this page, we added a map that was bigger than our initial walking area and so it took in more benchmarks. This charted 86 benchmarks in the central area. When this page was published, it was clear we had to expand the area and so we settled on the area roughly within the modern Basingstoke ring-road. As the ring-road is not square, a few benchmarks are also included that are outside it. This increased the number of benchmarks to 119. This number only covered the maps up to 1946. When we got access to the post 1946 maps, this number increased again. This now means we have a quantifiable list of benchmarks. Many more benchmarks exist outside this area and some benchmarks exist slightly off the map, which is annoying, but we had to draw the line somewhere. there is a good chance we have missed some within the area, as the markings are small and there are many maps and revisions.


Benchmark Numbering

We initially tried to give each benchmark a number based on its location, then we found more in that location that meant we would have had to re-number them all again. We then found different ones on different map revisions. All of this has led to a rather random number placement, but it should not matter as they are only an arbitrary index. Note that there are benchmarks but the range is from 0 to as the 0 benchmark is the fundamental benchmark. Ideally, the fundamental benchmark should have been number 1, but it was one of the last ones we found, on the map, and number 1 was already taken.


Benchmark Names

We tried to give a name to each benchmark that identifies its rough location. Some of these names are more specific than others. For example, where a lot of benchmarks appear close together. If future benchmarks are found, then some may have to be renamed and some already have been. Some are named after old roads and places that no longer exist and some are named after new roads and places, despite the benchmark no longer being there. The further out from the centre, the less accurate the naming may become as there are fewer landmarks to associate them with. Hopefully the names are good enough to recognise a rough location and differentiate them from each other. Note that the descriptions are generic and don't mention specific details, like house numbers. This is for the privacy of the residents.


Maps Used

We initially used the Ordnance Survey OS Six-Inch maps but there were very few benchmarks listed on these and they were not very consistent through their revisions. We now exclusively use the Ordnance Survey OS 25 inch maps. Due to modern maps still being in copyright, the only maps we can fully access digitally, as of , are from 1873 to 1946. There are 6 maps, each with 3 to 5 revisions, giving a total of 24 maps. We have a subscription access to view maps newer than 1946 at old-maps.co.uk, but some of the data is missing and the georeferencing uses maps of different dates. This site also has more scales to choose from, even some 1:500 maps. As we cannot be sure of the map dates, anything post 1946 is put into a single category. The OS MasterMap is the current 1:1,250 map. We do not have access to this, but many websites allow you to view various sections of it, which we have used in our research to show benchmarks lost between the 1980s and the present. Although this is the current map, the data seems to be 5 to 10 years out of date, in places. The following table shows details and links for the 24 maps from 1873 to 1946:


Ref. Series Grid Area Published Map Title Scale Link Notes
M1 OS 25 inch Hampshire and Isle of Wight XVIII.3 North West 1896 SECOND EDITION 1896 1:2,500 Link -
M2 OS 25 inch Hampshire and Isle of Wight XVIII.3 North West 1911 EDITION OF 1911 1:2,500 Link -
M3 OS 25 inch Hampshire and Isle of Wight XVIII.3 North West 1932 EDITION OF 1932 1:2,500 Link -
M4 OS 25 inch Hampshire and Isle of Wight XVIII.3 North West 1946 REVISION OF 1940 1:2,500 Link 1946 publishing date on bottom right of map
M5 OS 25 inch Hampshire and Isle of Wight XVIII.4 North East 1896 SECOND EDITION 1896 1:2,500 Link -
M6 OS 25 inch Hampshire and Isle of Wight XVIII.4 North East 1911 EDITION OF 1911 1:2,500 Link -
M7 OS 25 inch Hampshire and Isle of Wight XVIII.4 North East 1932 EDITION OF 1932 1:2,500 Link -
M8 OS 25 inch Hampshire and Isle of Wight XVIII.4 North East 1946 REVISION OF 1940 1:2,500 Link 1946 publishing date on bottom right of map
M9 OS 25 inch Hampshire and Isle of Wight XVIII.7 Central West 1879 - 1:2,500 Link -
M10 OS 25 inch Hampshire and Isle of Wight XVIII.7 Central West 1896 SECOND EDITION 1896 1:2,500 Link -
M11 OS 25 inch Hampshire and Isle of Wight XVIII.7 Central West 1910 EDITION OF 1910 1:2,500 Link -
M12 OS 25 inch Hampshire and Isle of Wight XVIII.7 Central West 1932 EDITION OF 1932 1:2,500 Link -
M13 OS 25 inch Hampshire and Isle of Wight XVIII.7 Central West 1946 REVISION OF 1940 1:2,500 Link 1946 publishing date on bottom right of map
M14 OS 25 inch Hampshire and Isle of Wight XVIII.8 Central East 1873 - 1:2,500 Link -
M15 OS 25 inch Hampshire and Isle of Wight XVIII.8 Central East 1896 SECOND EDITION 1896 1:2,500 Link -
M16 OS 25 inch Hampshire and Isle of Wight XVIII.8 Central East 1910 EDITION OF 1910 1:2,500 Link -
M17 OS 25 inch Hampshire and Isle of Wight XVIII.8 Central East 1932 EDITION OF 1932 1:2,500 Link -
M18 OS 25 inch Hampshire and Isle of Wight XVIII.8 Central East 1940 REVISION OF 1937 1:2,500 Link 1940 publishing date on bottom right of map
M19 OS 25 inch Hampshire and Isle of Wight XVIII.11 South West 1896 SECOND EDITION 1896. 1:2,500 Link -
M20 OS 25 inch Hampshire and Isle of Wight XVIII.11 South West 1910 EDITION OF 1910 1:2,500 Link -
M21 OS 25 inch Hampshire and Isle of Wight XVIII.11 South West 1932 EDITION OF 1932 1:2,500 Link -
M22 OS 25 inch Hampshire and Isle of Wight XVIII.12 South East 1896 SECOND EDITION 1896 1:2,500 Link -
M23 OS 25 inch Hampshire and Isle of Wight XVIII.12 South East 1910 EDITION OF 1910 1:2,500 Link -
M24 OS 25 inch Hampshire and Isle of Wight XVIII.12 South East 1932 EDITION OF 1932 1:2,500 Link -

Note: The 1:10,560 scale is the historic 6 inch to the mile scale.
Note: The 1:2,500 scale is the historic 25 inch to the mile scale.


Map Discrepancies

Not all benchmarks appear on all versions of the maps. It is very likely that, over time, new benchmarks were created to replace ones that were destroyed or inaccessible at the time of surveying. In order to measure elevation, there needs to be some distance between two points. If there seems to be clusters of benchmarks, within a few metres of each other, then it is likely these are replacements for each other. The picture below shows some changes between map revisions in the Sarum Hill & Flaxfield Road area:

Map Discrepancies Example

The Ordnance Survey maps, used on this page, are all out of copyright. These maps were created before the Ordnance Survey transition to a UK government owned limited company on 2015-04-01. This means a map is out of copyright after 50 years of its publishing date, provided it was created prior to 2015-04-01. The latest map used, on this page, is from 1946 and the copyright expired for this in 1996. For more details, see the Crown Copyright page.

The only other map used, on this page, is a modern underlay map. This is from Stamen using their Toner map. This is under an open license and seems to be linked to OpenStreetMap, which is also under an open license.

We are genuinely unsure if we have understood this copyright correctly and would like to thank all those who made the maps that have enabled us to do this research. These maps are purely used for historical research, which is non-profit.


Historic maps from 25 inch Ordnance Survey 1932:
Hampshire and Isle of Wight XVIII.3/4/7/8/11/12
© Crown Copyright

Map tiles by Stamen Design, under CC BY 3.0.
Data by OpenStreetMap, under ODbL.

Additions & modifications:
© Andrew Watten 2020


Searching for Benchmarks

Due to us having a young family and very limited time, it is impractical for us to search for all the benchmarks. It would be a great help if others could help out in the search and hopefully have some fun while doing so. If you find one and would like it added to the list, please email us at history@watten.net with a photo and some details, and we will add it to the list. As so many have been destroyed, any historic photos of them would be especially welcome. It would be great if we could increase the number found.


Benchmarks Found

The table below shows some statistics of how many benchmarks have been found, as of .

State Statistic Percent Description
Confirmed Found Benchmarks that have been found, even if damaged, and a picture taken to confirm
Confirming Benchmarks probably exists and arrangements in place to confirm
Probably Exists Benchmark probably present but may be buried etc.
Cannot Find Benchmarks where we have looked but could not find them, but they may exist
Suspected Destroyed Very likely the benchmark has been destroyed but needs confirmation
Destroyed The building or road etc. clearly doesn't exist any longer or proven destroyed
Not Checked We have not looked for these benchmarks yet
Total Benchmarks - -

Note: The percentages have been rounded to the nearest whole number, so the total percentage may not add up to 100%.
Note: With the MasterMap information added in 2.2, many of the 'Suspected Destroyed' were changed to 'Destroyed'.


Benchmark Placement

Most benchmarks seem to be low down. The highest one we have found is at about 1 metre off the ground. The lowest one found was disappearing into the road, as years of resurfacing was gradually obscuring it. Most benchmarks out of the town centre seem to be on walls and a lot of these seem to be on the ends of the walls, on the wall posts. Unfortunately, many of these wall posts have been knocked over by cars. If the original surveyors knew how vulnerable these positions were, they probably would have put them in a different place. Many benchmarks are also on pubs. The surveyors must have thought that pubs would last forever, but many of the Basingstoke pubs are now gone. Quite a few are on private houses, but some people have built extensions over them.


Benchmark Orientation

The benchmark map icons are positioned extremely accurately however sometimes the orientation of the icon changes. As we have no historic before and after pictures of these benchmarks, it is unlikely we will ever find out why the icon orientation changed. The following picture shows an example of this:

Benchmark Orientation Example

Advice on Searching

Benchmarks can appear anywhere. For example, public buildings, private residences, bridges, walls etc. Please respect the environment these are found in. For example, we found ourselves standing suspiciously outside someone's house and it didn't feel right, so we marked it that we couldn't find it and moved on. Also, some benchmarks are in very dangerous places like bridges and narrow roads. If a benchmark is on private property, then permission will be needed before searching for it. Note that the public are not allowed on the railway!


List of Benchmarks

The following sections show various lists of all the benchmarks and where they appear on the maps.


Creating a Suitable Map

We needed a suitable map to show where the benchmarks are or were across all maps and revisions. This would meaning joining maps together and then overlaying this with data from all revisions. We then wanted another underlay of the modern road layout for comparison. In the past, maps were produced on sheets and there wasn't the technology available to link these all together. This can now be done and it is called georeferencing, which essentially is joining the maps together and aligning them correctly. The National Library of Scotland has done this for the 1896 maps. Unfortunately this is too old, as many buildings have not yet been built. For the 6 maps used, there is no consistently dated map above 1932. All the maps have a 1932 version so this seemed like the best map to use. This was also a nice bridging date between old and new and it contained the most benchmarks of any survey, at 98 We tried to join these together and although it is not perfect, it should be good enough for locating the benchmarks. We then added an underlay of the modern roads. When complete, we realised that the map was enormous but we couldn't shrink it without loosing the resolution needed to identify the benchmarks. The table below shows the total benchmarks listed per map survey:

Survey
Period
Benchmarks
Listed
Notes
1873 to 1879 53 -
1896 44 -
1910 to 1911 77 -
1932 98 Maps chosen as most benchmarks listed
1940 to 1946 86 -

Map of Benchmarks

The following picture shows a map of all the benchmarks. This is split into 6 separate sections, due to its size. Please click on the relevant section make it larger. Note that each full resolution section of the map is 4379x5590 pixels. Also note that your web browser may shrink the image to fit on your screen, so you may have to zoom in to see the detail. Each benchmark is highlighted by a red circle, with its associated number next to it. Please note that the circles vary in size and placement slightly. This is to prevent other nearby features or text from being obscured and to prevent being cut up with the map sections.

Benchmarks Map North West North Central North East South West South Central South East

Note: Maps older than 2.0 did not have version or copyright information on them.

Click this Full Map link to open all 6 sections in one map. Note that the resolution of this combined map is 13137x11180 pixels. Please be aware that this image may be too large for some browsers to display!



Table of Benchmarks

The following table shows a list of all benchmarks, where they located and other information. If they have been found, then there will be an accompanying picture.


No.
Benchmark Name
Area
Placement
State
Picture
Date*
Notes
0 FUNDAMENTAL BENCHMARK (Costello School) Central East School (Grounds) [NPA] Confirming - - Confirmed existed on 2019-09-03 by Bench Mark Database. On current MasterMap
1 Willis Museum Central Museum [PA] Confirmed Found (1) Willis Museum

B001MH_2020-08-01

2020-08-01 Contains a bolt
2 St. Michael's Church Central Church [PA] Confirmed Found (2) St Michael's Church

B002MH_2020-08-01

2020-08-01 Contains a bolt. Highest placement we have found
3 Cross Street (East) Central Unknown Building Destroyed - 2020-08-24 Destroyed between 1940 & 1960s maps. Whole north side of Cross Street destroyed
4 New Street / Flaxfield Road (North Side) Central Unknown Building Destroyed - 2020-08-24 Destroyed between 1940 & 1960s maps. East end of Flaxfield Road destroyed for New Street extension northwards
5 Goat Lane (West) Central Unknown Building Destroyed - 2020-08-24 Destroyed between 1940 & 1960s maps. Goat Lane west of New Road destroyed
6 Mortimer Lane Central Wall (Body) [PA] Confirmed Found (6) Mortimer Lane

B006MH_2020-10-16

2020-10-16 Looks like the original wall was destroyed and the benchmark rebuilt into a new wall as the bricks protrude slightly
7 Wote Street / Potters Lane Central Unknown Building Destroyed - 2020-08-24 Destroyed between 1960s & 1970s maps. Wote Street north section & Potters Lane destroyed
8 The Wheatsheaf (West) Central Pub [PA] Confirmed Found (8) The Wheatsheaf

B008MH_2020-08-01

2020-08-01 Only appears on post 1946 maps
9 United Reform Church Central Church [NPA] Cannot Find - 2020-08-01 Obscured by extension to left of building, but may still exist as on current MasterMap. Access restricted due to 2020 pandemic
10 Victoria Hotel Central Pub [PA] Destroyed - 2020-08-18 Destroyed between 1940 & 1960s maps
11 New Road (North) Central East Unknown Building Destroyed - 2020-08-24 Destroyed between 1940 & 1960s maps. New Road north end buildings destroyed
12 New Road (Centre - C) Central East Wall (Post) [PA] Confirmed Found (12) New Road (Centre)

B012MH_2020-08-21

2020-08-21 Very prominent
13 New Road (South) Central East Unknown Building Destroyed - 2020-08-24 Destroyed between 1940 & 1960s maps. Only new buildings in this location
14 St Mary's Church Central East Church [PA] Not Checked - - On current MasterMap
15 Brook Street / Church Street Central North Wall (Body) [PA] Confirmed Found (15) Brook Street / Church Street

B015MH_2020-08-01

2020-08-01 On curved part of wall
16 Brook Street / Station Hill Central North Unknown Building Destroyed - 2020-08-24 Destroyed between 1940 & 1960s maps. Brook Street & Station Hill destroyed
17 The Station Hotel Central North Pub [PA] Destroyed - 2020-08-24 Destroyed between 1970s & 1980s maps. Junction Road & Station Hill destroyed
18 Wote Street (North) Central North Unknown Wall Destroyed - 2020-08-24 Destroyed between 1940 & 1960s maps. Wote Street north section destroyed
19 Cliddesden Road / Fairfields Road Central South Unknown Building Destroyed - 2020-08-18 Destroyed between 1940 & 1960s maps
20 Council Road (North) Central South Wall (Body) [PA] Cannot Find - 2020-08-18 Not on current MasterMap
21 Council Road (School) Central South School [NPA] Not Checked - - On current MasterMap
22 Hackwood Road / Cliddesden Road Central South Unknown Wall Destroyed - 2020-08-18 Destroyed between 1940 & 1960s maps
23 Jubilee Road (South) Central South Unknown Wall Cannot Find - 2020-08-18 On current MasterMap
24 Victoria Street / Little Victoria Street Central South Unknown Building Destroyed - 2020-08-18 Destroyed between 1960s & 1970s maps. Only new buildings in the area
25 Essex Road (Central) Central West Unknown Wall Destroyed - 2020-08-29 Destroyed between 1940 & 1960s maps
26 Flaxfield Road / Sarum Hill (South Side) Central West Private Building [PA] Confirmed Found (26) Flaxfield Road / Sarum Hill (South_Side)

B026MH_2020-08-29

2020-08-29 On Army Cadet Force building, brick extension on left
27 Flaxfield Road (Centre - B) Central West Wall (Body) [PA] Destroyed - 2020-09-17 Destroyed between 1960s & 1970s maps
28 Hare & Hounds (North) Central West Pub [PA] Destroyed - 2020-08-01 Destroyed between 1940 & 1960s maps
29 Penrith Road (West Side) Central West Unknown Wall Destroyed - 2020-08-29 Destroyed between 1940 & 1960s maps.
30 Sarum Hill (Baptists) Central West Unknown Wall Cannot Find - 2020-08-01 On current MasterMap
31 Sarum Hill (Cinema) Central West Unknown Wall Destroyed - 2020-09-04 Destroyed between 1940 & 1960s maps
32 Winchester Road (East) Central West Unknown Wall Cannot Find - 2020-08-21 Not on current MasterMap
33 Rayleigh Road / Worting Road (South Side) Central West Wall (Post) [PA] Probably Exists - 2020-08-29 Suspected buried behind retaining earthwork. Last shown on 1940 map
34 Near Soldier's Return Oakridge Private Residence [NPA] Destroyed - 2020-06-24 Destroyed between 1970s & current MasterMap. Front extension built over benchmark
35 Oakridge Farm (Old) Oakridge Unknown Building Destroyed - 2020-08-24 Destroyed between 1932 & 1946 maps. Oakridge Farm (Old) destroyed for north part of ring-road. A newer Oakridge Farm was built to the north, now destroyed, in what is now Pershore Road
36 Bunnian Place (Bridge) Southview Bridge [PA] Confirmed Found (36) Bunnian Place (Bridge)

B036MH_2020-07-24

2020-07-24 Very low down
37 Burgess Road (West) Southview Wall (Body) [PA] Destroyed - 2020-07-24 Destroyed between 1980s & current MasterMap
38 Chapel Hill (South - South Side) Southview Unknown Building / Wall Destroyed - 2020-07-24 Destroyed between 1970s & 1980s maps
39 Cromwell Road Southview Unknown Wall Destroyed - 2020-09-13 Old wall replaced by modern wall in 2015 but could have been destroyed earlier than this. Benchmark shown on modern MasterMap, so likely it was destroyed recently
40 Darlington Road (East) Southview Unknown Wall Destroyed - 2020-07-24 Destroyed between 1946 & 1960s maps
41 Darlington Road (West) Southview Wall (Post) [PA] Confirmed Found (41) Darlington Road (West)

B041MH_2020-07-31

2020-07-31 On right-hand gate post
42 Mortuary Chapel (Church of England) Southview Church [PA] Destroyed - 2020-08-24 Mortuary Chapel destroyed between 1940 & 1960s maps
43 Nornhill House (Boundary Stone) Southview Boundary Stone [PA] Destroyed - 2020-09-06 Destroyed between 1960s & 1970s maps
44 Nornhill (Bridge) Southview Bridge [PA] Cannot Find - 2020-07-24 Very dangerous location. Not on current MasterMap
45 Phoenix Park Terrace / Alley Southview Private Residence [PA] Confirmed Found (45) Phoenix Park Terrace / Alley

B045MH_2020-08-01

2020-08-01 Benchmark painted over, in black, and hard to see
46 Vyne Road / Queen Mary Avenue Southview Boundary Stone [PA] Destroyed - 2020-07-24 Destroyed between 1940 & 1960s maps
47 Richmond Road (West) Southview Wall (Body) [PA] Confirmed Found (47) Richmond Road (West)

B047MH_2020-07-31

2020-07-31 Very feint
48 Rising Sun Southview Pub [PA] Probably Exists - 2020-09-13 Benchmark likely hidden under years of paint. On current MasterMap
49 Station Outbuilding (North) Southview Unknown Building Destroyed - 2020-09-13 Destroyed between 1960s & 1970s maps
50 Vyne Road / Burgess Road Southview Wall (Body) [PA] Confirmed Found (50) Vyne Road / Burgess Road

B050MH_2020-07-31

2020-07-31 Definition poor
51 Vyne Road / Phoenix Park Terrace Southview Wall (Body) [PA] Confirmed Found (51) Vyne Road / Phoenix Park Terrace

B051MH_2020-07-21

2020-07-21 The 1st benchmark we found when specifically searching
52 Footpath to Oakridge Southview Boundary Stone [PA] Destroyed - 2020-09-13 Destroyed between 1940 & 1960s maps but the stone still exists on the 1960s maps but is gone on the 1970s maps. There is some undergrowth, so the boundary stone could still be hidden. Not on current MasterMap
53 Signal Box (East - Between Railways) Railway Railway [NPA] Not Checked - - The building still seems to exist, but no benchmark has been recorded on it since 1966. The public are not allowed on the railway! Not on current MasterMap
54 Gashouse Road / Reading Road (South Side) Central North Unknown Wall Destroyed - 2020-08-24 Destroyed between 1940 & 1960s maps. Gashouse Road destroyed
55 Reading Road (Salvation Army - North Side) Central North Unknown Building / Wall Destroyed - 2020-08-24 Destroyed in the 1970s to 1980s
56 Bunnian Place (Seed Mill - West Side) Central North Unknown Building Destroyed - 2020-08-24 Destroyed in the 1970s to 1980s
57 Bunnian Place (South) Central North Private Residence [PA] Destroyed - 2020-08-24 Bunnian Place south section destroyed between 1960s & 1970s maps. Some maps show this on the pub, but it was actually on the adjoining house
58 Chapel Street (North) Central North Unknown Building Destroyed - 2020-08-24 Destroyed between 1940 & 1960s map. Chapel Street destroyed
59 Brook Street (West) Central West Unknown Building Destroyed - 2020-08-24 Destroyed between 1940 & 1960s map. Brook Street destroyed
60 Brook Street (Brewery) Central North Unknown Building Destroyed - 2020-08-24 Destroyed between 1960s & 1970s map
61 Haymarket Central Theatre [PA] Destroyed - 2020-09-17 Destroyed between 1980s & current MasterMap. Was on public convenience building on north east side, that has now gone. People remember seeing it
62 Shooter's Lodge Southview Unknown Building Destroyed - 2020-08-24 Destroyed between 1946 & 1960s maps, but building remained until the 1980s
63 Winchester Road (Opposite Shaftesbury Terrace) Central West Private Residence [PA] Destroyed - 2020-08-21 Destroyed between 1932 & 1940 maps
64 Eastrop Lane (North) Central East Road [PA] Destroyed - 2020-08-24 Destroyed between 1940 & 1960s maps
65 The Engineers Arms Central North Pub [PA] Destroyed - 2020-08-24 Destroyed between 1960s & 1970s maps. Not shown as a pub until the 1960s
66 London Road (West) Central Unknown Wall Destroyed - 2020-07-21 Destroyed between 1940 & 1960s maps
67 Near The White Hart (West) Central East Unknown Building / Wall Destroyed - 2020-08-21 Destroyed between 1970s & current MasterMap
68 London Road (School) Central East Road [PA] Destroyed - 2020-09-15 Destroyed between 1960s & 1970s maps. Not clear if it was on a stone. Could still be hidden in the undergrowth.
69 Engine Shed (North East) Railway Railway [NPA] Destroyed - 2020-09-15 Destroyed between 1873 & 1896 maps. The public are not allowed on the railway!
70 Castle Inn Central East Pub [PA] Destroyed - 2020-08-24 Destroyed between 1896 & 1910 maps. Note that some people have reported seeing this benchmark in the 2000s, but the building is now destroyed.
71 Gashouse Road (South) Central East Unknown Building Destroyed - 2020-08-24 Destroyed between 1910 & 1932 maps
72 Reading Road (Salvation Army - South Side) Central North Unknown Building Destroyed - 2020-08-24 Destroyed between 1896 & 1910 maps
73 Goods Shed (South East) Railway Railway [NPA] Destroyed - 2020-08-24 Destroyed between 1896 & 1910 maps. Now the southern station car park
74 Bunnian Place (Seed Mill - East Side) Central North Private Residence [PA] Destroyed - 2020-08-24 Destroyed between 1896 & 1910 maps
75 Chapel Hill (Bridge) Central North Bridge [PA] Confirmed Found (75) Chapel Hill (Bridge)

B075MH_2020-09-13

2020-09-13 Benchmark is upside down. Not on current MasterMap and last shown on the 1873 map
76 Pest House Railway Unknown Building Destroyed - 2020-08-24 Destroyed between 1873 & 1896 maps with railway expansion. Shown as a Pest House on the 1873 1:500 map
77 Old Tunnel West Railway Bridge [PA] Destroyed - 2020-08-24 Destroyed between 1896 & 1910 maps with railway expansion. Tunnel no longer present
78 Rayleigh Road / Worting Road (North Side) Central West Private Residence [PA] Destroyed - 2020-08-24 Destroyed between 1910 & 1932 maps. The building is still present but we have searched it several times and found nothing
79 The New Inn Central West Pub [PA] Destroyed - 2020-08-01 Destroyed between 1873 & 1896 maps. Building became a pub in 1891 and not marked on map as a pub until 1910. Suspected destroyed on pub redevelopment
80 Cross Street / Church Street (East Side) Central Unknown Building Destroyed - 2020-08-24 Destroyed between 1910 & 1932 maps
81 Church Steet (North) Central North Wall (Body) [PA] Destroyed - 2020-08-01 Destroyed between 1873 & 1896 maps
82 Wote Street (Foundry) Central Unknown Building Destroyed - 2020-08-24 Destroyed between 1896 & 1910 maps. Wote Street north section destroyed
83 Swan Inn Central Pub [PA] Destroyed - 2020-08-24 Destroyed between 1873 & 1896 maps. Wote Street north section destroyed
84 Eastrop Bridge Central East Bridge [PA] Destroyed - 2020-08-24 Destroyed between 1873 & 1896 maps
85 Horse & Jockey Central South Pub [PA] Destroyed - 2020-08-26 Destroyed between 1873 & 1896 maps
86 Brambly Grange Central West Unknown Building Destroyed - 2020-08-29 Destroyed between 1910 & 1932 maps
87 Penrith Road (East Side) Central West Unknown Building / Wall Destroyed - 2020-08-29 Destroyed between 1910 & 1932 maps
88 Kingsclere Road (South) Southview Private Residence [NPA] Confirming - - Only appears on post 1946 maps. On current MasterMap
89 Lancaster Road Southview Private Residence (Internal) [NPA] Confirming - 2020-08-25 In garage as it was built on the side of the house. Not on current MasterMap
90 Kingsclere Road (North) Southview Private Residence [NPA] Confirmed Found (90) Kingsclere Road (North)

B090MH_2020-08-25

2020-08-25 On side of house
91 Merton Farm Houndmills Unknown Building Destroyed - 2020-08-28 Destroyed between 1960s & 1970s maps. Merton Farm used to be in the town centre
92 Hamilton Close Houndmills Unknown Wall Destroyed - 2020-08-24 Destroyed between 1940 & 1960s maps
93 Isolation Hospital Winklebury Boundary Stone [PA] Destroyed - 2020-09-15 Destroyed between 1946 & 1960s maps. New buildings in area, but it could be hidden in the undergrowth
94 Aldermaston Road (South) Houndmills Road [PA] Destroyed - 2020-09-13 Destroyed between 1946 & 1960s maps. New development in area but tree line still exists
95 Ringway North (North Side) Rooksdown Road [PA] Destroyed - 2020-09-13 Destroyed between 1946 & 1960s maps. New development in area but could be hidden in undergrowth
96 Shakespeare Road Popley Road [PA] Destroyed - 2020-09-04 Destroyed between 1940 & 1970s maps
97 Reading Road Roundabout Oakridge Milestone [PA] Destroyed - 2020-09-14 Destroyed between 1946 & 1960s maps. Still may be in the roundabout undergrowth
98 Upton Crescent Oakridge Unknown Wall Destroyed - 2020-09-15 Destroyed between 1946 & 1960s maps. The line of the original footpath still exists
99 Barbel Avenue Riverdene Unknown Building Destroyed - 2020-09-04 Destroyed between 1970s & 1980s maps
100 Deadman's Lane Riverdene Milestone [PA] Confirmed Found (100) Deadman's Lane

B100MH_2020-10-08

2020-10-08 On lower west side of milestone
101 Hackwood Road / Applegarth Close Central South Road [PA] Destroyed - 2020-09-15 Destroyed between 1932 & 1940 maps
102 Hackwood Road / Westfield Road Central South Road [PA] Destroyed - 2020-09-15 Destroyed between 1932 & 1940 maps
103 Cliddesden Road (Near The Shrubbery - Upper) Central South Unknown Wall Destroyed - 2020-09-04 Destroyed between 1932 & 1940 maps. Destroyed by the creation of Ringway South
104 Cliddesden Road (Stoke Lodge) Central South Unknown Wall Destroyed - 2020-08-28 Destroyed between 1932 & 1940 maps
105 Winchester Road / Hawkfield Lane Kings Furlong Milestone [PA] Destroyed - 2020-09-11 Destroyed between 1932 & 1960s maps
106 Winchester Road (Near Portacre Rise - On House) Kings Furlong Private Residence [NPA] Confirming - - On current MasterMap
107 Winchester Road (Railway Bridge) Kings Furlong Railway [NPA] Destroyed - 2020-08-28 Destroyed between 1932 & 1940 maps. Railway to Alton decommissioned
108 Wessex Close (Cranbourne Lodge) Kings Furlong Private Residence [PA] Destroyed - 2020-08-28 Destroyed between 1932 & 1940 maps. Cranbourne Lodge destroyed
109 Wessex Close (Cranbourne Nurseries) Kings Furlong Unknown Wall Destroyed - 2020-09-04 Destroyed between 1932 & 1940 maps. Destroyed to make way for college
110 Worting Road (College - South Side) Brookvale Road [PA] Destroyed - 2020-08-29 Destroyed between 1932 & 1946 maps. Close to, but not on a milestone
111 Worting Road / Alexandra Road Brookvale Wall (Body) [PA] Confirmed Found (111) Worting Road / Alexandra Road

B111MH_2020-08-29

2020-08-29 Upside down and on south and not west wall. Likely wall damaged and rebuilt. Not on current MasterMap
112 Worting Road / Deep Lane Brookvale Unknown Wall Suspected Destroyed - 2020-08-29 Only part of the wall remains and there are a lot of weeds. Not on current MasterMap
113 Deep Lane / George Street Brookvale Private Residence [PA] Confirmed Found (113) Deep Lane / George Street

B113MH_2020-08-29

2020-08-29 Side of house
114 Lower Brook Street (School) Brookvale Private Residence [NPA] Not Checked - - School building converted to private residences. On current MasterMap
115 May Street Brookvale Private Residence [PA] Confirmed Found (115) May Street

B115MH_2020-08-29

2020-08-29 Has been painted over but still quite obvious
116 Lower Brook Street (East) Brookvale Unknown Building Destroyed - 2020-08-29 Destroyed between 1980s & current MasterMap
117 Worting Road (Railway Bridge) Brookvale Railway [NPA] Destroyed - 2020-08-28 Destroyed between 1970s & 1980s maps. Railway to Alton decommissioned
118 Worting Road (Lodge - West) / Sandys Road West Ham Unknown Building Destroyed - 2020-08-28 Destroyed between 1946 & 1960s maps, but building remained until the 1970s map
119 New Street / Flaxfield Road (South Side) Central Unknown Wall Destroyed - 2020-09-03 Destroyed between 1910 & 1932 maps
120 Wote Street / Bedford Place Central Unknown Building Destroyed - 2020-09-03 Destroyed between 1910 & 1932 maps. Wote Street north section destroyed. Bedford Place is the alley opposite Goat Lane
121 Chapel Hill (South - North Side) Southview Unknown Wall Not Checked - - Not on current MasterMap
122 Winchester Road (Near Portacre Rise - On Road) Kings Furlong Road [PA] Destroyed - 2020-09-14 Destroyed between 1910 & 1932 maps, replace with number 106
123 Cliddesden Road (Near The Shrubbery - Lower) Central South Unknown Wall Destroyed - 2020-09-04 Destroyed between 1910 & 1932 maps
124 Ringway North (South Side) Houndmills Road [PA] Destroyed - 2020-09-13 Destroyed between 1910 & 1932 maps. Could still be hidden in undergrowth
125 Chineham Lane Popley Road [PA] Destroyed - 2020-09-04 Destroyed between 1911 & 1932 maps
126 Kingsclere Road (Central) Southview Road [PA] Destroyed - 2020-09-13 Destroyed between 1910 & 1932 maps
127 Kingsclere Road / Aldermaston Road Houndmills Guide Post [PA] Destroyed - 2020-09-13 Destroyed between 1910 & 1932 maps
128 Oakridge Infant School Oakridge School [NPA] Not Checked - - Only appears on post 1946 maps. On current MasterMap
129 Stratfield Road (West) Oakridge Private Residence [NPA] Destroyed - 2020-09-14 Destroyed between 1970s & current MasterMap. New extension replaced original side building. Only appears on post 1946 maps
130 Stratfield Road (East) Oakridge Private Residence [NPA] Confirming - - Only appears on post 1946 maps. On current MasterMap
131 Scotney Road Oakridge Private Residence [NPA] Confirmed Found (131) Scotney Road

B131MH_2020-09-04

2020-09-04 Only appears on post 1946 maps
132 Maple Crescent (North) Oakridge Private Residence [NPA] Confirmed Found (132) Maple Crescent (North)

B132MH_2020-09-04

2020-09-04 Only appears on post 1946 maps
133 Maple Crescent (South) Oakridge Private Residence (Internal) [NPA] Probably Exists - 2020-09-04 Only appears on post 1946 maps. In garage, behind plasterboard, as garage was built on the side of the house. On current MasterMap
134 Ringway West Houndmills Unknown Wall Not Checked - - There is a wall buried in the undergrowth. This is an extremely hazardous area! Only appears on post 1946 maps. On current MasterMap
135 Edison Road Houndmills Private Building [NPA] Destroyed - 2020-09-13 Created then destroyed in the 1970s. Only appears on post 1946 maps
136 Watson Way (South) Winklebury Private Residence [PA] Confirmed Found (136) Watson Way (South)

B136MH_2020-09-12

2020-09-12 Only appears on post 1946 maps
137 Norden Close Southview Private Residence [PA] Confirmed Found (137) Norden Close

B137MH_2020-09-04

2020-09-04 Only appears on post 1946 maps
138 Charles Chute Secondary School Southview School [NPA] Destroyed - 2020-09-04 Destroyed between 1970s & current MasterMap. Only appears on post 1946 maps
139 Queen Mary Avenue / Shooters Way Southview Private Residence [NPA] Confirmed Found (139) Queen Mary Avenue / Shooters Way

B139MH_2020-09-04

2020-09-04 Only appears on post 1946 maps
140 Pemerton Road Southview Private Residence [NPA] Confirmed Found (140) Pemerton Road

B140MH_2020-09-06

2020-09-06 Only appears on post 1946 maps
141 Queen Mary Avenue (East) Southview Private Residence [NPA] Confirmed Found (141) Queen Mary Avenue (East)

B141MH_2020-09-06

2020-09-06 Only appears on post 1946 maps
142 Wilmott Way (North) Winklebury Private Residence [PA] Confirmed Found (142) Wilmott Way (North)

B142MH_2020-09-12

2020-09-12 Only appears on post 1946 maps
143 Wilmott Way (South) Winklebury Private Residence [NPA] Confirmed Found (143) Wilmott Way (South)

B143MH_2020-09-12

2020-09-12 Only appears on post 1946 maps
144 Winklebury Railway Tunnel (East) Winklebury Bridge [PA] Confirmed Found (144) Winklebury Railway Tunnel (East)

B144CH_2020-09-12

2020-09-12 Sandwiched between the bridge and the low wall. Only appears on post 1946 maps
145 Churchill Way East (West) Basing View Unknown Building Destroyed - 2020-09-04 Destroyed between 1970s maps. Only appears on post 1946 maps
146 Eastrop Lane (South) Riverdene Private Residence [NPA] Not Checked - - Only appears on post 1946 maps. On current MasterMap
147 Hare & Hounds (South) Central West Pub [PA] Destroyed - 2020-10-16 Destroyed between 1970s & current MasterMap. The building still exists, but we have searched multiple times and cannot find it. The rear of the building looks new, so it could have been lost in its redevelopment. Only appears on post 1946 maps.
148 Essex Road (North) Central West Private Building [PA] Confirmed Found (148) Essex Road (North)

B148MH_2020-10-16

2020-10-16 Only appears on post 1946 maps
149 Worting Road (College - North Side) Brookvale Unknown Wall Not Checked - - Only appears on post 1946 maps. Not on current MasterMap
150 Worting Road (Lodge - East) / Sandys Road Central Unknown Building Destroyed - 2020-09-04 Created and destroyed between the 1970s maps. Only appears on post 1946 maps
151 The Wheatsheaf (South) Central Pub [PA] Destroyed - 2020-09-04 Destroyed between 1896 & 1910 maps. Note that number 8 is very close to this and still exists
152 The Lamb Central South Pub [PA] Destroyed - 2020-09-04 Destroyed in 2018 with pub redevelopment. I personally recall seeing this and thought it would be good if someone took photos and listed all these one day. Only appears on post 1946 maps
153 Winchester Road / Penrith Road Kings Furlong Private Residence [NPA] Not Checked - - Only appears on post 1946 maps. On current MasterMap
154 Western Way / St Paul's Road South Ham Private Residence [NPA] Confirmed Found (154) Western Way / St Paul's Road

B154MH_2020-09-15

2020-09-15 Only appears on post 1946 maps
155 Western Way / Princes Crescent South Ham Private Residence [NPA] Suspected Destroyed - 2020-09-15 Extension over benchmark, but may be still there internally. Only appears on post 1946 maps. Not on current MasterMap
156 Hackwood Road / Grove Road Black Dam Private Residence [NPA] Not Checked - - Only appears on post 1946 maps. On current MasterMap
157 Wessex Close (College) Kings Furlong School [PA] Confirmed Found (157) Wessex Close (College)

B157MH_2020-09-11

2020-09-11 Only appears on post 1946 maps
158 Winchester Road / Hill View Road South Ham Private Building [PA] Confirmed Found (158) Winchester Road / Hill View Road

B158MH_2020-09-15

2020-09-15 Only appears on post 1946 maps
159 New Road (Centre - A) Central East Unknown Wall Destroyed - 2020-09-04 Destroyed between 1896 & 1910 maps
160 New Road (Centre - B) Central East Unknown Wall Destroyed - 2020-09-04 Destroyed between 1910 & 1932 maps
161 Flaxfield Road (Centre - A) Central West Private Residence [PA] Destroyed - 2020-09-14 Destroyed between 1896 & 1910 maps, possibly covered by extension
162 Pear Tree Inn Central Pub [PA] Destroyed - 2020-09-04 Destroyed between 1873 & 1896 maps. East end of Flaxfield Road destroyed for New Street extension
163 Near The White Hart (East) Central East Unknown Wall Destroyed - 2020-09-14 Destroyed between 1873 & 1896 maps
164 Western Way / St. Patrick's Road South Ham Private Residence [NPA] Confirming - - Only appears on post 1946 maps. On current MasterMap
165 Churchill Way (West) West Ham Road [PA] Destroyed - 2020-09-04 Destroyed in 2020 with road widening scheme. Only appears on post 1946 maps. On current MasterMap
166 Wessex Close (Central) Kings Furlong Private Residence [PA] Confirmed Found (166) Wessex Close (Central)

B166MH_2020-09-11

2020-09-11 Only appears on post 1946 maps
167 Winchester Road / Wessex Close Kings Furlong Private Residence [NPA] Not Checked - - Only appears on post 1946 maps. On current MasterMap
168 Cliddesden Road (Opposite Stoke Lodge) Central South Unknown Building Destroyed - 2020-09-04 Destroyed sometime after the 1960s maps as no newer map to confirm with. Only appears on post 1946 maps
169 Swing Swang Lane (Foot Tunnel) Daneshill Bridge [PA] Destroyed - 2020-09-27 Destroyed sometime between 2012 & 2020. Old bridge replaced with new concrete structure. Only appears on post 1946 maps. On current MasterMap
170 Chapel Street (Central) Central North Unknown Building Destroyed - 2020-09-16 Destroyed between 1960s & 1970s maps. Only appears on post 1946 maps
171 Reading Road (North) Central East Unknown Wall Destroyed - 2020-09-16 Destroyed between 1960s & 1970s maps. Only appears on post 1946 maps
172 Churchill Way East (Central) Basing View Unknown Building Destroyed - 2020-09-16 Destroyed between 1960s & 1970s maps. Only appears on post 1946 maps
173 Basing Road (Laundry) Central North Unknown Building Destroyed - 2020-09-16 Destroyed between 1960s & 1970s maps. Only appears on post 1946 maps
174 The Railway Arms Central North Pub [PA] Destroyed - 2020-09-16 Destroyed between 1960s & 1970s maps. Only appears on post 1946 maps
175 Rose & Crown Central Pub [PA] Destroyed - 2020-09-16 Destroyed between 1960s & 1970s maps. Only appears on post 1946 maps
176 Chapel Hill (North) Southview Unknown Building Destroyed - 2020-09-16 Destroyed between 1873 & 1896 maps
177 Rose Central North Pub [PA] Destroyed - 2020-09-16 Destroyed between 1873 & 1896 maps

* Date the benchmark was last checked, regardless of whether it was found.
Note: Pictures of private residences, that are not publicly accessible, are only shown if permission was gained to take a photo from the resident.


The table below shows a detailed description of the Placement column:

Placement
Text
Building
Type
Placement
on
Building
Publicly
Accessible
Notes
Boundary Stone [PA] Boundary Stone Outside Yes Stones can often be covered in overgrowth
Bridge [PA] Bridge Outside Yes The retaining wall of the bridge
Church [PA] Church Outside Yes -
Church (Internal) [NPA] Church Inside No Should be publicly accessible, but only when open
Guide Post [PA] Guide Post Outside Yes -
Milestone [PA] Milestone Outside Yes Stones can often be covered in overgrowth
Museum [PA] Museum Outside Yes -
Private Building [NPA] Private Building Outside No Private building may be a place of work, factory, society etc. but not a house
Private Building [PA] Private Building Outside Yes Private building may be a place of work, factory, society etc. but not a house
Private Residence (Internal) [NPA] House Inside No Internal benchmarks happen when a homeowner builds extensions over them
Private Residence [NPA] House Outside No -
Private Residence [PA] House Outside Yes House is immediately adjacent to a public footpath etc.
Pub [PA] Pub, Inn or Hotel Outside Yes Building was a pub at any point in its history
Railway [NPA] Railway Outside No On railway building or infrastructure. Strictly no public access, highly dangerous!
Road [PA] Road Outside Yes On the road itself. Could also be a wall as map not clear. Publicly accessible but dangerous!
School (Grounds) [NPA] Education In the Grounds No -
School [NPA] Education Outside No -
School [PA] Education Outside Yes -
Theatre [PA] Theatre / Arts Outside Yes -
Unknown Building Building Outside - Unknown building type as it has been destroyed
Unknown Wall Wall Unknown - Unknown wall type as it has been destroyed
Unknown Building / Wall Building / Wall Unknown - Could be a building or a wall but unknown as it has been destroyed
Wall (Body) [PA] Wall The main part Yes Wall may be publicly or privately owned, but adjacent to a public footpath etc.
Wall (Post) [PA] Wall The wall post Yes Wall may be publicly or privately owned, but adjacent to a public footpath etc.

Note: [PA] stands for Publicly Accessible.
Note: [NPA] stands for Not Publicly Accessible.
Note: We feel if you can clearly see, with the naked eye, a benchmark on a private building or residence, then it is publicly accessible. Number 115 is an example of this.
Note: We feel if you have to go on private property, like a driveway, or need a zoom lens to see a benchmark, from the public footpath, then it is not publicly accessible and permission will be needed. Number 90 is an example of this.
Note: The [PA] & [NPA] designations are based on the map the benchmark was last found on and not the current map.


Benchmarks Elevations

The table below shows the elevation of each benchmark, as recorded on the maps. It also shows what map and what version of that map, the benchmarks appear on. Note that text associated with a benchmark, on a map, can vary slightly, so only the elevation numbers are recorded. Also note that the middle dot character has been replaced by the full stop character. A hyphen denotes that the benchmark does not appear. If No ID is shown, then the benchmark icon appears on the map, but its text does not. All the maps are from the OS 25 inch series, in the grid Hampshire and Isle of Wight XVIII.n, where .n can be 3, 4, 7, 8, 11 or 12.

Maps are grouped by years, like 1873 & 1879 as the surveys took several years to complete, but they are all part of the same survey. The survey accuracy increased greatly from 1932, so any discrepancies after this are noted, but those before are ignored. As of , we only have partial access to maps newer than 1946. This means we do not know exactly what year the elevation was recorded, so if the benchmark only appears post 1946, then the 1947- column will have a Yes in it or N/A otherwise. Elevations are recorded in feet.


No.
Benchmark Name
Map .n
1873 (.8)
1879 (.7)
1896 (All)
1910 (.7,8,11,12)
1911 (.3,4)
1932 (All)
1940 (.8)
1946 (.3,4,7)
1947-
Notes
0 FUNDAMENTAL BENCHMARK (Costello School) .8 - - - 324.09 324.09 N/A -
1 Willis Museum .8 306.2 306.2 306.2 305.35 305.35 N/A -
2 St. Michael's Church .8 270.1 270.1 270.1 269.26 269.26 N/A -
3 Cross Street (East) .8 - - - 272.94 272.94 N/A -
4 New Street / Flaxfield Road (North Side) .8 - - - 281.58 281.58 N/A -
5 Goat Lane (West) .8 - - - 265.76 265.76 N/A -
6 Mortimer Lane .8 - - - 270.99 270.99 N/A -
7 Wote Street / Potters Lane .8 - - 276.6 275.79 275.79 N/A -
8 The Wheatsheaf (West) ? - - - - - Yes -
9 United Reform Church .8 313.5 313.5 313.5 312.68 312.68 N/A -
10 Victoria Hotel .8 - - 302.4 301.54 301.54 N/A -
11 New Road (North) .8 274.9 274.9 274.9 274.06 274.06 N/A -
12 New Road (Centre - C) .8 - - - 296.63 296.63 N/A -
13 New Road (South) .8 311.4 311.4 311.4 310.51 310.51 N/A -
14 St Mary's Church .8 266.6 - - 265.74 265.74 N/A -
15 Brook Street / Church Street .8 - - 264.7 263.93 263.93 N/A -
16 Brook Street / Station Hill .8 262.0 262.0 262.0 261.17 261.17 N/A -
17 The Station Hotel .8 - - - 293.81 293.81 N/A -
18 Wote Street (North) .8 - - 262.7 261.82 261.82 N/A -
19 Cliddesden Road / Fairfields Road .8 - - 328.4 327.51 327.51 N/A -
20 Council Road (North) .8 - - 326.2 325.34 325.34 N/A -
21 Council Road (School) .8 - - - 335.62 335.62 N/A -
22 Hackwood Road / Cliddesden Road .8 321.1 321.1 321.0 320.20 320.20 N/A -
23 Jubilee Road (South) .8 - - - 339.66 339.66 N/A -
24 Victoria Street / Little Victoria Street .8 312.6 312.6 312.6 311.71 311.71 N/A -
25 Essex Road (Central) .8 - - 274.4 273.58 273.58 N/A -
26 Flaxfield Road / Sarum Hill (South Side) .8 - - - 269.92 269.92 N/A -
27 Flaxfield Road (Centre - B) .8 - - 276.8 276.00 276.00 N/A -
28 Hare & Hounds (North) .8 - - 266.7 265.91 265.91 N/A -
29 Penrith Road (West Side) .8 - - - 272.18 272.18 N/A -
30 Sarum Hill (Baptists) .8 289.6 289.6 289.6 288.79 288.79 N/A -
31 Sarum Hill (Cinema) .8 - - - 305.56 305.56 N/A -
32 Winchester Road (East) .8 310.5 310.5 310.5 309.62 309.62 N/A -
33 Rayleigh Road / Worting Road (South Side) .8 - - - 271.27 271.27 N/A -
34 Near Soldier's Return .3 - - 368.6 367.76 367.76 N/A -
35 Oakridge Farm (Old) .4 - - - 330.05 - N/A -
36 Bunnian Place (Bridge) .8 294.6 294.6 294.6 293.76 293.76 N/A -
37 Burgess Road (West) .8 - - 339.7 338.81 338.81 N/A -
38 Chapel Hill (South - South Side) .8 300.7 - - 299.69 299.69 N/A -
39 Cromwell Road .8 - - 354.0 353.24 353.24 N/A -
40 Darlington Road (East) .4 - - 365.8 364.97 364.97 N/A -
41 Darlington Road (West) .8 - - 367.9 367.07 367.07 N/A -
42 Mortuary Chapel (Church of England) .8 336.2 336.2 336.1 335.39 335.39 N/A -
43 Nornhill House (Stone) .8 - - 346.1 344.97 344.97 N/A -
44 Nornhill (Bridge) .8 333.2 333.2 333.3 332.44 332.44 N/A -
45 Phoenix Park Terrace / Alley .8 - - 336.3 335.47 335.47 N/A -
46 Vyne Road / Queen Mary Avenue .8 - - 358.4 357.71 357.71 N/A -
47 Richmond Road (West) .8 - - 360.3 359.47 359.47 N/A -
48 Rising Sun .8 - 323.3 323.3 322.40 322.40 N/A -
49 Station Outbuilding (North) .8 311.9 311.9 311.9 311.09 311.09 N/A -
50 Vyne Road / Burgess Road .8 - - 348.1 347.28 347.28 N/A -
51 Vyne Road / Phoenix Park Terrace .8 335.2 335.2 335.2 334.34 334.34 N/A -
52 Footpath to Oakridge .8 - - - 359.71 359.71 N/A -
53 Signal Box (East - Between Railways) .8 - - - 309.00 309.00 N/A -
54 Gashouse Road / Reading Road (South Side) .8 - - 287.3 286.50 286.50 N/A -
55 Reading Road (Salvation Army - North Side) .8 - - 272.3 271.58 271.52 N/A Changes between 1932 & 1940 maps
56 Bunnian Place (Seed Mill - West Side) .8 - - - 289.11 289.11 N/A -
57 Bunnian Place (South) .8 273.6 - - 272.83 272.83 N/A -
58 Chapel Street (North) .8 281.4 281.4 281.4 280.54 280.54 N/A -
59 Brook Street (West) .8 266.2 266.2 266.1 265.30 265.30 N/A -
60 Brook Street (Brewery) .8 265.5 - - 264.73 264.73 N/A -
61 Haymarket .8 - - 239.6 292.82 292.82 N/A -
62 Shooter's Lodge .4 - - 363.6 361.75 361.75 N/A -
63 Winchester Road (Opposite Shaftesbury Terrace) .8 294.2 294.2 294.2 293.29 - N/A -
64 Eastrop Lane (North) .8 - - - 256.52 256.52 N/A -
65 The Engineers Arms .8 262.9 262.9 262.9 262.07 262.07 N/A Benchmark orientation seems to change, but probably the same benchmark dealing with building extensions
66 London Road (West) .8 309.8 309.8 309.8 309.55 309.55 N/A -
67 Near The White Hart (West) .8 - - 296.8 295.94 295.94 N/A -
68 London Road (School) .8 - - 305.1 304.38 304.38 N/A -
69 Engine Shed (North East) .8 311.4 - - - - N/A -
70 Castle Inn .8 286.0 286.0 - - - N/A -
71 Gashouse Road (South) .8 261.2 261.2 261.2 - - N/A -
72 Reading Road (Salvation Army - South Side) .8 271.2 271.2 - - - N/A -
73 Goods Shed (South East) .8 308.7 308.7 - - - N/A -
74 Bunnian Place (Seed Mill - East Side) .8 - 289.6 - - - N/A -
75 Chapel Hill (Bridge) .8 290.0 - - - - N/A -
76 Pest House .8 308.4 - - - - N/A -
77 Old Tunnel West .8 297.5 297.5 - - - N/A -
78 Rayleigh Road / Worting Road (North Side) .8 274.0 274.0 274.0 - - N/A -
79 The New Inn .8 268.0 - - - - N/A -
80 Cross Street / Church Street (East Side) .8 272.4 272.4 272.4 - - N/A -
81 Church Steet (North) .8 263.5 - - - - N/A -
82 Wote Street (Foundry) .8 264.7 264.7 - - - N/A -
83 Swan Inn .8 266.0 - - - - N/A -
84 Eastrop Bridge .8 258.1 - - - - N/A -
85 Horse & Jockey .8 316.7 - - - - N/A -
86 Brambly Grange .8 283.2 283.2 283.2 - - N/A -
87 Penrith Road (East Side) .8 - - 271.0 - - N/A -
88 Kingsclere Road (South) ? - - - - - Yes -
89 Lancaster Road .7 - - - 356.47 356.47 N/A -
90 Kingsclere Road (North) .7 - - - 372.56 372.56 N/A -
91 Merton Farm .7 - - - 374.39 374.39 N/A .39 looks like .89 on 1946 map
92 Hamilton Close .3 - - 384.6 383.47 383.47 N/A -
93 Isolation Hospital .3 - 367.7 367.5 366.64 366.64 N/A -
94 Aldermaston Road (South) .3 - - - 379.54 379.54 N/A -
95 Ringway North (North Side) .3 - - - 360.12 360.12 N/A -
96 Shakespeare Road .4 - - - 320.94 320.94 N/A Benchmark orientation changes between 1932 & 1946
97 Reading Road Roundabout .4 - 332.0 332.0 331.18 331.18 N/A Benchmark orientation moves from east to north over time
98 Upton Crescent .4 - - 339.8 338.40 338.40 N/A -
99 Barbel Avenue .8 257.5 257.5 257.5 256.69 256.69 N/A -
100 Deadman's Lane .8 304.4 304.4 304.4 303.51 303.51 N/A -
101 Hackwood Road / Applegarth Close .12 - - 320.6 319.78 - N/A -
102 Hackwood Road / Westfield Road .12 - - 308.9 308.07 - N/A -
103 Cliddesden Road (Near The Shrubbery - Upper) .12 - - - 334.59 - N/A -
104 Cliddesden Road (Stoke Lodge) .12 - - 338.4 337.58 - N/A -
105 Winchester Road / Hawkfield Lane .7 284.3 284.3 283.8 282.90 - N/A -
106 Winchester Road (Near Portacre Rise - On House) .11 - - - 296.90 - N/A -
107 Winchester Road (Railway Bridge) .11 - - 304.4 303.44 - N/A -
108 Wessex Close (Cranbourne Lodge) .11 - - 291.5 290.68 - N/A -
109 Wessex Close (Cranbourne Nurseries) .11 - - 302.6 301.45 - N/A -
110 Worting Road (College - South Side) .7 290.9 290.9 290.9 290.91 - N/A -
111 Worting Road / Alexandra Road .7 - - 297.4 296.65 296.65 N/A -
112 Worting Road / Deep Lane .7 - - - 303.37 303.37 N/A -
113 Deep Lane / George Street .7 - - - 277.15 227.15 N/A Changes between 1932 & 1946 maps
114 Lower Brook Street (School) .7 - - - 282.59 282.59 N/A -
115 May Street .7 - - - 274.40 274.40 N/A -
116 Lower Brook Street (East) .7 - - - 270.19 270.19 N/A -
117 Worting Road (Railway Bridge) .7 - - 315.2 314.87 314.87 N/A .37 looks like .87 on 1946 map
118 Worting Road (Lodge - West) / Sandys Road .7 - - - 316.12 316.12 N/A -
119 New Street / Flaxfield Road (South Side) .8 - - 283.2 - - N/A -
120 Wote Street / Bedford Place .8 - - 265.9 - - N/A -
121 Chapel Hill (South - North Side) .8 - - 296.4 - - N/A -
122 Winchester Road (Near Portacre Rise - On Road) .11 - 299.3 299.3 - - N/A -
123 Cliddesden Road (Near The Shrubbery - Lower) .12 - - 335.7 - - N/A -
124 Ringway North (South Side) .3 - 368.0 367.7 - - N/A 1896 & 1911 maps show different benchmark orientation
125 Chineham Lane .4 - 322.8 322.8 - - N/A -
126 Kingsclere Road (Central) .7 - - 362.3 - - N/A -
127 Kingsclere Road / Aldermaston Road .7 374.1 373.4 373.7 - - N/A -
128 Oakridge Infant School ? - - - - - Yes -
129 Stratfield Road (West) ? - - - - - Yes -
130 Stratfield Road (East) ? - - - - - Yes -
131 Scotney Road ? - - - - - Yes -
132 Maple Crescent (North) ? - - - - - Yes -
133 Maple Crescent (South) ? - - - - - Yes -
134 Ringway West ? - - - - - Yes -
135 Edison Road ? - - - - - Yes -
136 Watson Way (South) ? - - - - - Yes -
137 Norden Close ? - - - - - Yes -
138 Charles Chute Secondary School ? - - - - - Yes -
139 Queen Mary Avenue / Shooters Way ? - - - - - Yes -
140 Pemerton Road ? - - - - - Yes -
141 Queen Mary Avenue (East) ? - - - - - Yes -
142 Wilmott Way (North) ? - - - - - Yes -
143 Wilmott Way (South) ? - - - - - Yes -
144 Winklebury Railway Tunnel (East) ? - - - - - Yes -
145 Churchill Way East (West) ? - - - - - Yes -
146 Eastrop Lane (South) ? - - - - - Yes -
147 Hare & Hounds (South) ? - - - - - Yes -
148 Essex Road (North) ? - - - - - Yes -
149 Worting Road (College - North Side) ? - - - - - Yes -
150 Worting Road (Lodge - East) / Sandys Road ? - - - - - Yes -
151 The Wheatsheaf (South) .8 305.6 305.6 - - - N/A -
152 The Lamb ? - - - - - Yes -
153 Winchester Road / Penrith Road ? - - - - - Yes -
154 Western Way / St Paul's Road ? - - - - - Yes -
155 Western Way / Princes Crescent ? - - - - - Yes -
156 Hackwood Road / Grove Road ? - - - - - Yes -
157 Wessex Close (College) ? - - - - - Yes -
158 Winchester Road / Hill View Road ? - - - - - Yes -
159 New Road (Centre - A) .8 297.1 297.1 - - - N/A -
160 New Road (Centre - B) .8 - - 297.0 - - N/A -
161 Flaxfield Road (Centre - A) .8 270.7 270.7 - - - N/A -
162 Pear Tree Inn .8 283.2 - - - - N/A -
163 Near The White Hart (East) .8 293.4 - - - - N/A -
164 Western Way / St. Patrick's Road ? - - - - - Yes -
165 Churchill Way (West) ? - - - - - Yes -
166 Wessex Close (Central) ? - - - - - Yes -
167 Winchester Road / Wessex Close ? - - - - - Yes -
168 Cliddesden Road (Opposite Stoke Lodge) ? - - - - - Yes -
169 Swing Swang Lane (Foot Tunnel) ? - - - - - Yes -
170 Chapel Street (Central) ? - - - - - Yes -
171 Reading Road (North) ? - - - - - Yes -
172 Churchill Way East (Central) ? - - - - - Yes -
173 Basing Road (Laundry) ? - - - - - Yes -
174 The Railway Arms ? - - - - - Yes -
175 Rose & Crown ? - - - - - Yes -
176 Chapel Hill (North) .8 331.0 - - - - N/A -
177 Rose .8 265.0 - - - - N/A -

Note: The 'Map .n' column only shows 1873 to 1946 numbers as the sheet numbers are unknown for later dates.


Ordnance Survey Benchmark Archive

Shortly after we finished searching through all the maps, we found that the Ordnance Survey (OS) had a list to download, that showed the location of 517,009 benchmarks. Personally speaking, it was a lot more fun searching on the maps than just downloading a list. However the list is not very user friendly and for the benchmarks we found, it only listed 57 of them, implying the list only showed the ones they could find.

The OS data uses grid references to locate the benchmarks, these are in the form, SU 6364 5217. To search on a grid reference, the UK Grid Reference Finder website has a search box for Grid Reference.

The OS data shows benchmarks for the whole country. We had to filter this data to our map of roughly within the modern Basingstoke ring-road. The approximate grid reference boundaries are:

Position Grid Reference
Top Left SU 6189 5375
Bottom Left SU 6189 5086
Top Right SU 6533 5375
Bottom Right SU 6533 5086
Centre SU 6361 5231


No.
Grid
Reference
Height
Datum
Network
Order
Type of
Mark
Height
Above
Ground
Verified
Date
Leveling
Date
Description
Notes
0 SU 6438 5180 98.7829 N 4 1 - 0.0 1912 1912 - This is the Fundamental Benchmark (FBM). However the OS data specifically says these are not included in the data set?
1 SU 6378 5189 93.3179 L 8 1 - 0.0 - 1856 - Listed twice as bolt listed separately
1 SU 6378 5189 93.0640 N 5 1 PA BOLT 0.0 1969 1955 PA BOLT TH SW ANG Listed twice as bolt listed separately
2 SU 6364 5217 82.3122 L 6 1 - 0.0 - 1856 - Listed twice as bolt listed separately
2 SU 6364 5217 82.0616 N 6 1 PA BOLT 1.0 1969 1955 PA BOLT ST MICHAELS CH S FACE SW ANG Listed twice as bolt listed separately
6 SU 6354 5208 82.5863 N 4 3 - 0.5 1969 - WALL 36 CHURCH SQ -
8 SU 6359 5185 92.9000 N 0 3 - 0.6 1969 - NBM WHEATSHEAF INN SW ANG W FACE -
9 SU 6389 5187 95.2957 N 3 3 - 0.5 1969 - CONGL CH N SIDE RD W FACE -
12 SU 6398 5202 90.4128 N 3 3 - 0.5 1959 - P W SIDE NO46 NEW RD WALL JUNC E FACE -
14 SU 6415 5218 80.9945 N 1 3 - 0.2 1959 - ST MARYS CH E ANG NE FACE -
15 SU 6363 5231 80.4306 N 3 3 - 0.2 1969 - P WALL S SIDE CHURCHILL WAY NE FACE -
21 SU 6372 5158 102.2845 N 0 3 - 0.4 1969 - SCH NE ANG E FACE COUNCIL RD -
23 SU 6375 5150 103.5186 N 7 3 - 0.3 1969 - WALL JUNC SE ANG JUBILEE RD E FACE -
26 SU 6333 5199 82.2338 N 2 3 - 0.5 1969 1969 DRILL HALL NE ANG N FACE -
30 SU 6347 5192 88.0232 N 0 3 - 0.6 1930 - WALL NW FACE BAPTIST CH 2.3m SW JUNC -
32 SU 6347 5177 94.3752 N 3 3 - 0.4 1969 - WALL JUNC NO14 WINCHESTER RD -
36 SU 6387 5260 89.5411 N 1 3 - 0.2 1959 - RLY BR E SIDE RD W FACE -
39 SU 6348 5286 107.6615 N 7 3 - 0.3 1959 - WALL NO7 CROMWELL RD S FACE -
41 SU 6326 5301 111.8768 N 5 3 - 0.2 1959 - P ENT SHERBORNE HO NE SIDE SHERBORNE RD JUNC SW FACE -
45 SU 6376 5272 102.2421 N 2 3 - 0.3 1959 - NO20 PHOENIX PARK TERR E FACE -
47 SU 6337 5294 109.5604 N 7 3 - 0.4 1959 - WALL NO1 RICHMOND RD S FACE -
48 SU 6344 5264 98.2675 N 3 3 - 0.5 1959 - THE RISING SUN PH CHAPEL HILL NE FACE -
50 SU 6361 5279 105.8479 N 1 3 - 0.4 1959 - WALL SW SIDE VYNE RD JUNC S SIDE BURGESS RD -
51 SU 6365 5269 101.9008 N 5 3 - 0.6 1959 - WALL CEMY W SIDE VYNE RD E FACE -
88 SU 6329 5276 102.7542 N 9 3 - 0.5 1959 - NBM NO13 KINGSCLERE RD NW FACE -
90 SU 6296 5291 113.5441 N 1 3 - 0.3 1969 - NO50 KINGSCLERE RD W ANG SW FACE -
100 SU 6485 5200 92.4663 N 6 2 - 0.3 1957 1957 N FACE M S S SIDE RD -
106 SU 6277 5117 90.5134 N 2 3 - 0.4 1969 - NO219 WINCHESTER RD E ANG NE FACE -
113 SU 6273 5211 84.4631 N 4 3 - 0.4 1969 - NO65 GEORGE ST W ANG SW FACE -
114 SU 6277 5224 86.1273 N 5 3 - 0.5 1969 - SCH 6.4M N ANG NE FACE -
115 SU 6297 5225 83.6188 N 4 3 - 0.4 1969 - NO193 MAY ST 5.8M SE ANG E FACE -
128 SU 6312 5333 108.9142 N 0 3 - 0.8 1959 - NBM WALL ANG SCH S SIDE OAKRIDGE RD N FACE -
130 SU 6347 5356 103.1291 N 9 3 - 0.5 1959 - NBM NO74 STRATFIELD RD NW ANG -
131 SU 6369 5344 98.1700 N 9 3 - 0.5 1959 - NBM NO48 SCOTNEY RD NW ANG -
132 SU 6353 5331 105.8814 N 4 3 - 0.4 1959 - NBM NO21 MAPLE CRES E FACE -
133 SU 6359 5319 109.2190 N 0 3 - 0.5 1959 - NBM NO2 MAPLE CRES -
134 SU 6205 5323 112.8278 N 3 3 - 0.6 1968 - NBM WALL 5.5M S WALL JUNC E SIDE NEW RD -
136 SU 6189 5293 111.4593 N 8 3 - 0.5 1969 - NBM 44 WATSON WAY N ANG E FACE -
137 SU 6378 5291 108.5149 N 1 3 - 0.5 1959 - NBM NO27 NORDEN CLOSE NE ANG -
139 SU 6405 5297 109.1397 N 5 3 - 0.5 1959 - NBM NO48 QUEEN MARY AVE NW ANG N FACE -
140 SU 6423 5316 108.9050 N 5 3 - 0.7 1959 - NBM NO21 LEFROY AVE NE ANG -
141 SU 6434 5303 105.4791 N 0 3 - 0.5 1959 - NBM HO NO77 QUEEN MARY AVE SE ANG -
142 SU 6200 5270 103.4746 N 1 3 - 0.5 1969 - NBM 16 WILMOTT WAY N ANG E FACE -
143 SU 6193 5254 106.0917 N 5 3 - 0.5 1969 - NBM 91 WILMOTT WAY S ANG W FACE -
144 SU 6198 5236 96.7923 N 0 3 - 0.5 1969 - NBM RLY BR NW ANG N FACE -
146 SU 6424 5201 84.8929 N 1 3 - 0.6 1959 - NBM GARAGE NO12 EASTROP LANE N FACE -
148 SU 6338 5225 81.3432 N 4 3 - 0.7 1969 - NBM NO 47 ESSEX RD NW FACE N ANG -
152 SU 6399 5160 97.8103 N 3 3 - 0.5 1969 - NBM THE LAMB PH CLIDDESDEN RD N ANG -
153 SU 6324 5160 87.2652 N 6 3 - 0.4 1969 1969 NBM 83 WINCHESTER RD S FACE SW ANG -
154 SU 6210 5149 105.2749 N 8 3 - 0.5 1969 - NBM NO33 WESTERN WAY SW ANG W FACE -
156 SU 6431 5104 88.0695 N 2 2 - 0.3 1957 1957 NBM NO115 HACKWOOD RD W ANG SW FACE -
157 SU 6297 5099 92.0051 N 0 3 - 0.4 1969 1969 NBM SCH CANTEEN E FACE SE ANG -
158 SU 6250 5094 93.1672 N 6 3 - 0.5 1969 - NBM 257 WINCHESTER RD S ANG SW FACE -
164 SU 6194 5106 106.9523 N 6 3 - 0.5 1969 - NBM 138 WESTERN WAY S ANG E FACE -
165 SU 6204 5213 87.0448 N 9 3 RIVET 0.1 1969 - NBM RIVET CUL N SIDE RD N FACE -
166 SU 6301 5119 89.4984 N 3 3 - 0.5 1969 - NBM NO29 WESSEX CLOSE E ANG SE FACE -
167 SU 6303 5138 87.4858 N 3 3 - 0.5 1969 - NBM 165 WINCHESTER RD E FACE NE ANG -
168 SU 6386 5110 104.3483 N 9 3 - 0.5 1958 - NBM LO W SIDE CLIDDESDEN RD NE ANG -
169 SU 6502 5342 84.9569 N 1 3 - 0.6 1959 - NBM RLY BR NE SIDE SWING SWANG LANE E SIDE RLY SE FACE -

Note: This OS data has been cleaned and ordered.
Note: All heights are in metres (m).
Note: Numbers 75 & 111 have been found but are not on this OS list, probably because these benchmarks are either damaged or could not be found when they were searched for.


Other Information

Contributors

Since this page was first published, on 2020-08-25, several people have contacted us with information or have gone to look for benchmarks themselves. This has helped improve the content and accuracy of this page. These people are:


The following links are to websites and documents about the various aspects of Basingstoke history:


Contact

To get in contact with us about anything benchmark related, especially any errors on this page, please email: history@watten.net


Page Information

Page Standards

Both Benchmark and Bench Mark are both valid terms. On this page they will all be referred to as: Benchmark / Benchmarks / benchmark / benchmarks.

All dates on this page are in the YYYY-MM-DD format, as the year is the most significant date.


Media Naming

The media on this page, which is currently only pictures, has a specific naming standard:

Example: B113MH_2020-08-29.jpg

Note: All characters are in uppercase and the extension is in lowercase!


Version History

The table below shows the version history, of this page, highlighting major changes only. It is assumed that each version will introduce minor graphical improvements and text modifications.

Version Date Changes
1.0 2020-08-25 Webpage first published
1.1 2020-08-27 Speed improved with thumbnails
Benchmark table sorting added
1.2 2020-08-31 Benchmark list increased
New benchmark map added
Map list increased
Map table sorting added
Page icon added
Statistics table added
Version history added
2.0 2020-09-17 SSL added to basingstoke.wiki on 2020-08-31
Statistics now generated automatically
Benchmarks increased to 178
Table collapsing added
Benchmarks elevation table added
OS benchmarks table added
Table of Benchmarks accuracy improved
Legal text added to maps
Colours made more consistent
2.1 2020-09-18 Fixed benchmarks traversing map segments
Fixed tables truncating on mobile devices
Fixed HTML version info
2.2 2020-10-16 OS MasterMap research added
Standards added
State colours added on elevations table

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