Try this source for clubs and sessions Flaxey Green

I'm not aware of much in Honiton itself but that doesn't mean there's nothing. Brian and Ruth, who sometimes MC the Topsham Folk club may know more about that area. Brian, I know, also used to go to the (English) music session on the 3rd Wednesday at the Volunteer in Sidmouth. I don't know if that's still running but the ("traditional") singaround on the 1st Wednesday has moved to the upstairs room at the Anchor and still has some of the best unaccompanied singing I've heard. There's plenty going on in general but I don't know much about accessibility via public transport I'm afraid – some of the best stuff I get to is a little bit off the beaten track (and to the west of Exeter).