Hi,
my firend is gay and he certainly doesn't struggle meeting other gays! lol! There is really only two clubs/bars that are for the gay scene, but the Edge is brilliant!! On a Wednesday it is free entry and £1.50 for drinks!! I have been with my friend a few times and find it to have a really good vibe about it, decent club! the other is a bit further into the City, but i wouldn't worry as buses run regularly.
Don't know about the Soc, but you could join the Facebook group when you join and start meeting people there and maybe find out more about the club. Also if you don't like what they do you could run for a position on the committee and make changes!! hehe x