BeauMan,
As another ex air cadet Chipmunk fan in the area I have looked but not found one for training or solo hire, alas. I gather that there used to be one available at Old Buckenham, but that it had to go due to under-utilisation. There is a share in a Chippy for sale at Seething, but that's obviously a much bigger commitment.
However... once you have your PPL, there are other nice taildragger experiences around. As well as the Cambridge Flying Group's Tiger Moths I have heard good things about the quality of the taildragger conversion available on the Cub at Bourne, which could be a good location for you. I might be looking in there myself once the CAA sends my licence (application went in this week!)
HTH,