have you never thought of using a local garage robing ? seems odd driving all that way .
....I wouldn't trust any of the local garages except my VW dealer but they can't do things like install a DSG diff or setup a suspension, drill carbon, etc. It's horses for courses and I use either my dealer, JKM in Portsmouth, or VWR in Milton Keynes, each depending what needs doing. VWR can, and do, do all sorts of things which an ordinary garage can't and I'm very happy to drive the distance.
I use people I feel comfortable with and who I have a rapport with.