I take it that as you have referred to another poster in the U.K. as being on the "right island" and asked for a repairer that you too are U.K. based. If so then I can think of two good repairers, neither of whom will be cheap.

Newton and Ellis in Liverpool and Ed Trzoska in Leicester or Leicestershire. I don't have their website links but google both names and you can at least speak to them.

There are others. Google will no doubt give you previous threads from APUG as well. It usually throws the kitchen sink at you when you google

pentaxuser