I agree with JennyO about Kitty and Derek, I have been to Swanage, when it didn't clash, and the singaround in the Lion is very well run.
At Grove (White Horse Festival), on the Friday evening, they managed to fit in 50 singers, with no-one left out, they even remembered my name!
At the same festival Tony and Pearl O'Neill ran cracking sessions in the pub, as usual.
Dave and Kate Guest may run a small festival, but it has a terrific atmosphere, so well done to them.