Flying Club Conington (Just to the south of Peterborough) do the course on a Cessna 152 Aerobat. If money is a factor, then you'll find the 8 hours or so a lot cheaper, plus the club has plenty of people who compete.
The aircraft itself (G-BFKF from memory) often shows up at competitions. If you ask Gavin nicely, he often lets people take the aircraft away for a weekend's competition.
www.flying-club-conington.co.uk
Call 01487-834161 and ask for Gavin Forrest, the CFI.
TW