My bootlid was fitted incorrectly and was rubbing on the bodywork...they took it in, sent it to the bodyshop, work was done and car back within two days, no problem....so technically it wasnt them, but the transitional periods were hassle free.
Other things theyve sorted have been minor but theyve always had it in for a full day, I havent had any problems at all.
The guys have sometimes been a little off when Ive been in there...but the lady behind the service desk is really really helpful!!
I would always take my car to SMC....but wouldnt go anywhere near Herds in Weybridge, Ive heard too many horror stories about them!!