What kind of history do you like? And whereabouts are you roughly?
There are a surprising number of Ancient Egypt / Egyptology societies in the UK and it's a nice community. If you're open to "networking" it can also lead to other related groups and people. There are also fairly regular trips to Egypt or more local exhibitions, events and museums.
If you're within reach of London, then there are societies in Sussex, Thames Valley and Essex which have either a 50:50 in person/online programme (alternating one month in person the next online) or a fully in person programme. I don't know if any of those are near to you, just thinking about societies in a circle around London that definitely have in person activities. There is also the Egypt Exploration Society which has occasional in person events in London, and the Bloomsbury Summer School which has a mixture of in person short courses and study days in London, trips overseas, etc which all have a social element (eg going for dinner or drinks after lectures). Some of the bigger museums also run in person events (eg the Fitzwilliam has creative workshops connected to its exhibits.)
If Egyptology does not interest you at all, I think there is a similar type of community for people interested in ancient Greece / Rome but I'm not as tapped into that.
Obviously I could not guarantee you would meet any eligible men through Egyptology but the more social connections and contacts you have, the more opportunities you have to meet people. I find that when I talk to people at an event or lecture they will often mention something else interesting that they're involved in or another event or trip - and then that leads me to more fun activities and more interesting people. And it is just enjoyable in its own right.
Geology and fossil hunting is another one to possibly consider.
Less Egypt-focused, Oxford Lifelong Learning (Oxford University's department for continuing education) do study days in lots of different subjects. Cambridge University's department for continuing education do residential leisure course weekends. Basically a leisurely lecture series over a weekend interspersed with evening drinks and social dinners.