If you venture onto R32oc.com then these guys will need no introduction...
Automotive Performance Services a.k.a APS of Brackley -
www.autops.co.ukThese guys used to service and modify my Mk5 R32, with KW V3's, H&R ARB's and various other bits...
The are Sachs officianados and have just fitted my clutch to my Edition 30...
So why did I once again travel 120miles to use them? Because their quality of work is top drawer. They work on all VAG and prosche cars and have some great tuning names to their belt.
I would highly recommend them, and for further recommendations just try R32oc.com. Ed(front of house) is a top bloke too... They are also becoming Revo dealers after being long term superchips/sportec software suppliers... and they know they're stuff... They had a nice supercharge R8 in while I was there today...
Cheers, Dom.