In reply to Lucid_Dreamer:
Ken, I'm a member of Peak Climbing Club. It's pretty much centred on Sheffield although we do have members from Nottingham. We have regular Tuesday and Thursday meets in the Peak District, as far south as Matlock, Black Rocks, Cratcliffe. There is also a fairly extensive program of weekend and longer trips. I think the club is very friendly and it has a decent age range from 18 to 65+ and a pretty good balance of men and women. During the winter we climb indoors at the Sheffield walls, which might be a bit of a stretch for you, but if you like the sound of it keep us in mind come Spring! Have a look at the website:
http://www.peakclimbingclub.co.uk/