If you haven't found the right group(s) for you, then maybe one of our neighbouring u3as has the group you are looking for.
Most u3as have an Associate Member Category for people from other u3as - usually with a reduced subscription fee. Tynedale u3a does not charge a subscription for Associate Members.

Below are links to the group pages of four of our nearest neighbours

This link will give you a list of all the u3as in the Northumbria Region