Man you lot are really serious about it all!!! Lulabelle, If you're Stamford, which is Peterboro-ish if Nottingham isn't too far you could try the Mansfield Sprint. Of course it all depends on a) how serious YOU are about it, b)what sort of distances you feel comfortable at (I'd recommend a Sprint (400m pool based (no wet suit required) swim, 20k bike, 5k run, or there abouts)) and c) how much money you want to burn, ie wetsuits aren't cheap if you're only going to use it once.
It also depends on how competative you are. If you're really competative and a good swimmer, as your start time is solely based on your anticipated swim time, if you put a fast swim time on the application form (ie sub 7-8 mins for 400m) you'll be in with the SERIOUS racers, all lycra and aero-bars. If, on the other hand, you just want to have a good race for your first attempt, just put a slower swim time (over 10mins for 400m) and you'll be in with more novices and have a really fun event. Choice is yours.
Prozac