I was at Hallam back in 2002, i was 41, and there was more older mature students than myself, nobody seemed to care less even thou i did find some of the younger student irritating, so what, go for it, good luck.
Was good venue until all the tribute bands came along. What ****** me off about the place is that if your a local band and want to gig then you must sell so many tickets, pay to play im afraid.