Joe is the guy at Bluesprint. He's just down the road from me. Never had work done by him, but many friends have and he's a sound guy, not silly pants down prices, and none of them have had grief. Ill try and get his number for you....
You could try Field Motorsport ?? Had loads of work done by them and personally wouldn't take any of my cars anywhere else. They are based 5 minutes from Bluesprint.
Chris