How to convert your map OS Grid Reference to Latitude and Longitude or a Post Code
Our Walks Programmes always shows the walks locations in terms of a six figure OS Grid Reference, which is accurate to within a 100 metre square. (Note that 10 figure locations on maps are accurate to 1 meter square, although most hand held GPS receivers which read to 10 figures, achieve 3 to 10 metre accuracy at best).
With the increasing use of SatNav devices in cars, some people like to convert the walk location in terms of Latitude/Longitude or local Post Code. However it must be noted with caution that Post Code locations are inherently less accurate as they can cover relatively large areas especially in rural districts.