I've just seen this thread https://forums.groundspeak.com/GC/in...owtopic=197872 in the "other forum" and talkytoaster has very kindly offered to share his maps compiled from openstreetmap, Studlyone is hosting them and the links are further down the thread, I uploaded easily using sendmap wich is free at http://cgpsmapper.com/buy.htm.
Now I'm off to try it out (for those that don't know me well that fact that I managed to get them on my GPS without asking for help is a major accomplishment and means it must be easy)