Ordnance Survey maps can’t have every single thing labelled because there would be too much writing and it would not be very clear. ... A grid of squares helps the map-reader to locate a place.

For mapping purposes the UK is divided into separate 100km squares. The letters in our co-ordinates tell us which one of these squares we’re in. They can be found on the top of Ordnance Survey maps.

How to take a 6 figure grid reference with Steve Backshall and Ordnance Survey Each OS map has a specific prefix to tell you which part of the country you’re in. Ambleside in the Lake District ...

A PAPER by Brigadier M. N. MacLeod, Director General of the Ordnance Survey, on “A Grid System for the Maps of Great Britain” was read at a recent meeting of the Royal Geographical Society.

A new icon will be displayed on Ordnance Survey maps so that hikers and orienteers can adjust their compasses after magentic North shifted east of grid North for the first time since their charts ...

Following a closed alpha launch on 14 December, Ordnance Survey has completed testing of its OS OpenSpace API. It is now available for developers to mash up their own applications using the UK ...