Introduction

There are many websites that list the mountain summits and hills of England and Wales, and many of these give the 6 figure (100 metre) Ordnance Survey grid references of the summits.  Being the owner of a hand-held GPS receiver (a Garmin GPSMAP 76CS), which can record 10 figure grid references (theoretically accurate to 1 metre), I have tried to obtain accurate grid refs for each summit.  I started by making careful measurements from OS 1:25,000 maps (Outdoor Leisure and Explorer series).  I have revised many of these map estimates with actual readings from my GPS receiver.  Where a summit is marked by a triangulation pillar, I have used the WGS84 coordinates provided by the OS, converted to grid references.

I know that for many summits, such precision is unnecessary - but in mist, or when the top could be one of several rocky outcrops, or a flat plateau with a tiny cairn, or even completely unmarked.... (Also, I'm a bit of an anorak who's been given a new toy).  Such accuracy would, of course, have been useless before "Selective Availability" was switched off. 

I would be grateful to anyone who could send me their recorded grid references, so I can replace my estimated ones, and gradually build up a very accurate database.  I would also welcome your comments and suggestions about this website - see contact details.

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