Just found this thread...
I'm not a regular customer by any means, but had some great service from Mike & Co this summer. Over the last 10 years they have done a few minor jobs on my 944's and Boxster.
My 996 had developed a worrying "chirp" from the rear of the car. It was a bit intermittent, only when hot. I was due to take it to Classic Le mans at the weekend, and was concerned about anything failing during the trip.
At short notice they shuffled some jobs & managed to get me booked in.. gave the car a thorough checkover and pronounced it sound. I collected the car, asked for the bill & they didn't want to charge me because they had found nothing.. They did point out a couple of things that might need attention in due course.
I think that's a great attitude - and given the shortage of good specialists in the East Mids, I can't think of anyone better to use.
(A postscript to this was that the next day, while my car was idling, parked outside a friend's house, the "chirp" returned. I had a close listen & decided it was coming from low down at the rear of the engine. I rested my foot on one of the tailpipes & the noise went away! One swift bit of levering with a long bar & the exhausts were moved far enough apart so they stopped rubbing when hot

)