If you aren't looking at a professional career, and just want to fly for fun, plus are recently graduated from university (and therefore are somewhat short on cash, unless you're incredibly lucky), then I'd suggest look to either doing an NPPL(M) - otherwise known as a microlight licence, or looking to join a gliding club. Both will give you a much better "fun to the pound" ratio than arguably a standard light aircraft licence does.
(It's what I did when I graduated in 1992, I had a then PPL(D) about the end of 1993, and I still fly microlights, and love them - albeit that I'll admit to branching out to a load of other sorts of flying since.)
A fairly short drive down the M25 will get you to Exodus Airsports who have an excellent reputation in the microlight world:
http://exodusairsports.co.uk/ but if you look on the websites of the British Microlight Aircraft Association (BMAA) and the British Gliding Association (BGA) you'll find plenty of other options.
G