That sucks.
I am just outside of Bristol (Near Clevedon) and a couple of companies I have used are 'Bristol classic cars' in Kenn and 'Longlife Bodyworks/Prestige auto refinishing' (they have just moved) in Nailsea next to 'First Call BMW & German Car Specialists'.
I have mainly had work done on my 74 VW Camper, but would not hesitate to let them work on the golf. They both often work on prestige and classic cars.