Went to a client of mine in my village today to sort out a small leak. While there the lady told me a few weeks ago she came back from holiday and the cold water tank overflow was running. She couldn't find my number (she looked under 'P' for plumber but she had filed me under 'B' for Brown) so she called somebody from the yellow pages. A polish guy arrived, being an old house with dormer bedrooms the loft space is very restricted and he had to take out the F&E tank to get to the cold water tank. Once he had done that he went off for an hour to get a ballcock. Came back and fitted it and refitted the F&E tank. He was there less than 4 hours, bill £400. I said I would have to work for 3 days to charge her that sort of money.