The plumber (Dave Martin) was tremendously helpful and responded within a few hours. He charged a reasonable price and was very well aware of what sharks are out there, targetting elderly people living alone. I had earlier been quoted £140 +VAT for unblocking the toilet. He had met recently an elderly lady who was charged over £350, I think, for having two new taps fitted. It was so refreshing to meet a plumber with some ethics. Well done. Keep the firm going with a good repuation rather than inflated prices. I shall make your phone nuumber available to all the residents I know.