Thanks for the response everyone!
Just a few updates:
-The Socata Rallye 880B has around 3400 on the airframe and nearly 2000 on the engine. Also, it is now £80 per month and £50 per wet hour (old ad). It is based out of a small grass strip that is privately owned and does experience waterlogging, although there is a fund to get that Perfo stuff installed.
-G-BRPK has recently had a new engine, new prop, new Colton paint, new interior and in the flesh looks great (has visited Bourn often). I must admit also that this looks a great option, with better cruise speed and touring ability than the 152s at Bourn. I think it also has a Garmin GPS built in, something like a 395 or 495.
Best Regards
Luke