Hey. Nudist / naturist in Manchester here. You're not that far away.
What sort of thing are you looking for? Plenty of clubs - completely non-sexual - in the North of England. One in York (White Rose) that I'm planning to visit soon. Once a month, a part of St Anne's (just South of Blackpool) becomes a naturist beach for the day. Quite a few regular swims - just South of Manchester, Blackpool etc.