Hi there!
Your closest club is Plough Raceway, though primarily a summer club, being a traditional grass track they are always glad of more support and help, though not having their own website some details are here:
http://www.oople.com/forums/showthread.php?t=107598
You may also want to check Eden Park Raceway out (
http://www.edenparkraceway.com/) where, as you can see, contrary to some earlier statements we will be running this weekend (as we do once a month throughout the winter!) and we will be trackside Saturday preping the track for Sunday should you want to come along for a chat.
Would recommend doing that before you commit yourself to anything so you can get a good idea of what we use and what is popular at which ever track you decide to make your home, as it's always useful to have local knowledge, support and back-up.
More details of what going on in the South East are here:
http://www.oople.com/forums/forumdisplay.php?f=35
and here:
http://www.brca-southeast.co.uk/news.php
hope this helps?