There's BUYAN for 18-35 year olds. There are Juniors, Inters, and Seniors. There's the Women's League.
But there's nothing for 40- and 50-somethings. As a group, we may have slightly different needs. We may be rediscovering spirituality and religion after a time away from it. We may have changed our spiritual path recently. Some of us may have kids; some may not. We're all working, so can't join in with activities in the afternoon. And we like pubs.
So I have set up a group on Facebook for Unitarian 36 to 65 year olds (if you fall outside this age group but want to join anyway, you are very welcome).