Request for information - Ref No: FOI221067
Request
Thank you for your email of 3 February 2022, requesting information from Ordnance Survey in accordance with the Freedom of Information Act (FOIA) 2000, as set out in the extract below:
“Information on Trig Point TQ47/T371 - Aero Engine Testing Beds. I am doing some research into my local history and discovered that there was a trig point on an Engine Testing Bed with the reference above and in the attached image from your legacy trig point data. I am requesting extracts from the office & field copies of the surveyors logbooks that may help me identify the owner and use of this structure. I would like to know the owners of the building, the date the trig point was established (pre-1950) from the computation year. Also anything that may help with determining the function of the structure. From the location of the trig point it appears it may have been on the roof of the building but was destroyed on 9/85 though the building still appears to exist from Google Street View & Google Earth as well as personal observation.. If there are any pictures or sketches in the file copies of these would be useful as well. I am happy to accept the results in electronic form. PDF or TIFF if possible”
Our response
I confirm that Ordnance Survey does not hold the information you have requested.
However, under the duty to provide information and assistance in accordance with section 16 of FOIA, we can provide the following information which may assist you in this matter.
The majority of Triangulation Station Office files are now held by The National Archives (TNA). It would appear that the file for Triangulation Station TQ47/T371 (Aero Engine) is held by TNA, and is available for you to order direct from TNA, at the link here: Triangulation (Trig) Station number TQ/47/T371 or 51/47/T371. Trig name: Aero Engine... | The National Archives
You may also find the following general information on our website useful:
Historical map archives (ordnancesurvey.co.uk)
Internal review
Your enquiry has been processed according to the Freedom of Information Act (FOIA) 2000. If you are unhappy with our response, you may request an internal review with our Internal Review Officer by contacting them, within two months of receipt of our final response to your Freedom of Information (FOI) request, as follows:
Internal Review Officer
Customer Service Centre
Ordnance Survey
Adanac Drive
Southampton
SO16 0AS
Please include the reference number above. You may request an internal review where you believe Ordnance Survey has:
- Failed to respond to your request within the time limits (normally 20 working days)
- Failed to tell you whether or not we hold the information
- Failed to provide the information you have requested
- Failed to explain the reasons for refusing a request
- Failed to correctly apply an exemption or exception
The Internal Review Officer will not have been involved in the original decision. They will conduct an independent internal review and will inform you of the outcome of the review normally within 20 working days, but exceptionally within 40 working days, in line with the Information Commissioner’s guidance.
The Internal Review Officer will either: uphold the original decision, provide an additional explanation of the exemption/s applied or release further information, if it is considered appropriate to do so.
Appeal to Information Commissioner’s Office (ICO)
If, following the outcome of the internal review you remain unhappy with our response, you may raise an appeal, within three months of receiving our response, with the Information Commissioner’s Office.
Further information can be found on the ICO website (ico.org.uk) under ‘Report a concern’ or you may wish to call the ICO helpline on 0303 123 1113.