I haven't been to one because they're on at awkward times for me but all my local clubs have websites which explain how they cope with the varying abilities of members. One of the clubs splits the runners into groups according to speed so you run with similar runners. They generally will let you join in for a session or two so you can decide if you enjoy it. Try one out and see how you go. Good luck cheese!
I did the C25K a while ago and I can now run 5k in 40mins by myself and I managed 35mins at the first (and only Parkrun) I've been to. I've got a running buddy and we try to go once a week. She's a bit faster than me but we manage to run together. I'm curious about running clubs/groups? So any of you who run with one can you tell me a bit about them? How do you find one? How do they cater for different abilities? Should I wait until I'm a bit faster first? Do they vary their workouts/routes? Not sure what to ask, just tell me what comes to mind!