For those without the support John describes above, look for your local u3a. Most u3a's have walking groups to suit varying abilities. Some have orienteering and table tennis. Lots have ballroom, sequence or country dancing.
https://www.u3a.org.uk/get-involved/find-your-local-u3aAnd its all cheap. Our u3a charges £12 a year membership and the groups sometimes make a small charge to cover room hire. Walking groups are usually free - unless you join the group for lunch in the pub.
