Depends what you're looking to run.
Bedford only run GT12 on a Friday night.
http://www.bedsrcmcc.co.uk/
Milton Keynes run TC, GT12, WGT10 and 12th circuit on a sunday morning.
http://www.mkrctc.org.uk/
Leighton Buzzard run TC, GT12 and Tamiya Mini on a Tuesday night.
http://www.lbmcc.org/