Edgefield Coachworks, Loanhead (Nr Edinburgh) 0131 440 3108, get prestige cars in from all over Scotland, workmanship is superb, re sprays are done properly - doors, mirrors etc all removed.
Chap in Motherwell, i Know it's not exactly Glasgow but it's close enough to matter, re-sprayed my mates GTS. He was going to do my S4 before I sold it. If you want to get in contact, let me know. You can't phone him as he's deaf. You need to go and see him.