Control Information

BENCHMARK LISTINGS

Listings of Ordnance Survey Benchmarks are available in two formats:

The full listing for any 1 km national grid square £21.00 + VAT

A site centred listing giving the nearest 7 benchmarks £21.00 + VAT

As the benchmark network is no longer being maintained (since 1989), we are unable to guarantee that benchmarks listed have not been destroyed or undergone some form of detrimental alteration.

Click here for more on the Ordnance Survey Bench Mark network or Buy Now

HORIZONTAL CONTROL FOR GPS

For information on horizontal control points and their use as ‘passive stations’ we would recommend visiting www.gps.gov.uk. By registering (for free), you will then be able to access a full listing of passive stations and view written details, map locations and photos of the various locations available. This site is also excellent for many types of GPS resources including a program for GPS to national grid co-ordinate conversion.