I use a Specialist Car sales place, just around the corner from me. They are not Jaguar specialists as such, but look after a lot of sports cars: I have seen Jaguar, Aston Martin, Maserati, Ferrari etc in their workshops, as well as the usual Mercedes, BMW and Audis.
I know the owner, and can discuss exactly what I want with the guy who will be doing the work, and discuss it with him after it has been done as well.
They never do unnecessary work, and their charges are very reasonable.
All of this, and I can walk to the place in 5 minutes, and am given a big welcome at reception by their white Labrador when I get there.
What more could a guy want?