I had Ken Ruth work on my Rollei a number of years ago. Back then, he had a very long wait-list. (That was OK. I knew about it in advance.) The work was fine, and he was pleasant to deal with. I'd definitely check on the wait-list, though.
Back when the wonderful Mr. Grimes was alive, I had him do a number of jobs. His works was first-rate, and he did the work quickly. I haven't heard much about how the shop is these days.