I think some companies offering training will do this but I dont think the local groups work in this way.
Maybe ask IAM (if it's IAM you are aiming to do) for some names.
I know you didnt ask, and hope me dont mind saying, but when I signed up for IAM training all I wanted to do was to get the test done ASAP but I got heck of a lot out of having weekly/fortnightly sessions with my observer and am really glad I did it that way.
I found I learnt a bit with each session could practice it and then go onto something else.
For me the real value in advanced training was the sessions although I really enjoyed the test it was of much less importance by the time I did it than the training. I'd never of thought I'd feel that way when I signed up for it by the way.
I'd have missed a lot if I'd done an intensive few days and then the test.