I thought I would plug some jazz guitar classes which are inexpensive group classes and run at City Lit in London on Sunday afternoons - jazz guitar 2 and jazz guitar 3:??. I attended jazz guitar 1 and I am currently enrolled in the jazz guitar 2 course which starts this term (like jazz guitar 3) this Sunday. (I'm a bit worried that these might not run due to not having enough students signed up - so if you're interested, sign up soon. In theory, you might be able to start 1 or 2 weeks late but there is danger that the class will turn out to be cancelled due to not enough people if you do that.)
William