I personally wouldn't recommend Castle Combe as your 1st track day, IIRC they don't segregate groups into - Novice, Intermediate and advanced, They just get a group of 15/20, send you out with an instructor and then it's a free for all, also you get quite a few privateers (sp) up there testing and it can be quite daunting if it's your 1st time out being done up the inside by people far more experieced than yourself.
However. If you do decide to do it then good luck, i've only done the one track day and it was fooking brilliant
