Then there is a copyright issue. The OS will say they have copyright in the map and any information derived from it. To be copyright free you need to collect the information yourself.
Personally, I don't think we really have to worry about maps. I think we can assume that most people will go out and buy the map! But a disclaimer on the site could make it very clear that it is unwise to venture onto a walk without a proper map. Indeed, no map at all might be better than having one of those dodgy freehand drawings!
In article <BD1B44D9.3483C%andy.howellNOSPAM@ecotrendDOTorgDOTuk>, Andy Howell <andy.howellNOSPAM@ecotrendDOTorgDOTuk.?.invalid> writes
Quoted message said:
Indeed, no map at all might be better than having one of those dodgy freehand drawings!
BTW if you produce a freehand drawing of a map and that drawing is based on an OS map it is considered as having been copied and is subject to the copyright rules. -- Bill Grey http://www.billboy.co.uk