Mainly a mixture of polished floor and carpet then, apart from Teeside which is indoor astroturf.
To be honest you won't go far wrong with TTechs starting setup that you'll find on their website here:
http://ttechracing.com/downloads.html
I'll be at the regionals anyway, so come over and ask anything you want, I'll gladly help, I've been running a Pred for years.
Which is your local club?
G