I used them for a few years on both cars, usually with some promotion or other. They always did an OK job, and always tried to upsell on slightly questionable items that I either flat refused (engine flush, new brake lines) or let them do it as it was plausible (brakes for life anyone?!).
Last time I put my 10 year bimmer in for an MOT and oil service they cracked the sump, tried to tell me it was like that when it came in and it was going to cost me £400+ for them to fix. After some choice words they replaced it at their cost, but it left a sour taste and makes me wonder about the other stuff I’ve let them do.
I’ll not be going back now.