DJWicked I have heard of a website called Smart is Sexy, that is a bit like match.dot.com.
Its for people with postgrad qualifications seeking lurve but think it might be US based?
I am 30, met my fella 2 years ago, but I totally understand what you are saying. Esp in London it was as if the pied piper has rounded up all the single tasty 25-30 year olds & hidden them away. Depends what you are looking for I guess - I always found Shoreditch on a Friday night quite bountiful... if you like that sort of thing.
xxx good luck