Tiger Club
An interesting and different experience, particularly if you come to it from a Spam Can oriented training environment. You will be flying with "check pilots" rather than instructors, but don't worry about that, as they typically have gazillions of hours, so you really are in competent hands.
You can do tailwheel training on the Cub for about £85 per engine hour.
The check pilot approach does mean that you can get very different views on how to fly, but I believe you come out of the experience a much more flexible, knowledgeable pilot.
As said before, the vast majority of the club are friendly and welcoming, and it has more than it's fair share of interesting oddballs, though one or two were clearly badly beaten in their childhood

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As an added bonus, there's nothing to beat Headcorn on a hot summers weekend for sheer buzz and interest.