I have not used them but heard good things. Quick check shows many 5 star Google reviews, in fact they have only ever been scored as 5 stars by 64 reviewers.
I'm sure someone will be along soon to give you first hand experience of them.
Yep, used them quite a few times for services on my 4.3 Vantage, all great, just a bit of a drive for me these days so haven't used them in a few years.
Yep, Ive used them several times for servicing and doing a few bits like fitting the headlight venting kit. Mark is a good guy and they know their stuff. They have hundreds of cars on their books and are always busy (a good sign).