I've used the one on Scotswood when I had an airbag fault and they seemed spot on. HOWEVER I also had the mid fortune of using their bodyshop to get my wings repaired under warranty for the common rust issue and they were a bunch of chimps. There's a guy lad on the service dept and he was quite good. Not sure on the general ability of the techs but they did solve my issue well
HTHs
Andy