Have you tried U3A?( the University of the Third Age. )
www.u3a.org.uk/
Here's the introductory message - ^u3a is a UK-wide collection of 1000+ charities that provide the opportunity for those no longer in work to come together and learn for fun.
Make the most of life and join more than 430,000 members exploring new ideas, skills and interests with your local u3a.^
Don;t be put off by the word university. In my area the groups vary from lunching with single people, Bridge, Scrabble, walking, theatre visits, drama, science, art, etc etc etc. There are about 40 groups, most held in people's homes, all run by members. Hopefully you should be able to find a branch in your area and try out anything that appeals to you.