Took my MC to a main dealer for some warranty work (AUC) and they identified that my AC belt was cracked.
Offered to replace it for £130 while the car was there. I found the Continental belt on EuroCarParts for £13 before a snap 30% off sale was applied, so I got it for £11 delivered in the end.
I replaced it myself within an hour. The hardest part was getting the splash guard off without having access to ramps, but luckily I'm thin and happy to get mucky on the floor.
I'm fairly pleased I knocked 90% off the quote.
However, I know that according to some on the forum I've now knocked at least £10K off the value of my car, so I suppose £130 would've been cheaper.

