I've used Strood Mr Clutch for many years and always had good service. Get all my MOTs there and find them very honest and helpful.
Had a recurring problem with an automatic gearbox some years back with a Mk2 Mondeo TDCi, It had eaten 2 gear boxes fitted by other garages. They did an excellent job of fixing.
I only use them for MOTs these days though because of price and they don't mess me about.
Pretty sure they vary a lot on quality of service from each garage though because I've heard bad things about other branches.