Pimlico are the only plumbers I deal with.
After a disastrous experience with destructive tenants, I called in Pimlico to deal with a wide variety of issues I had with my flat. They had to rework my heating system, re-attach a high end toilet back to the wall and deal with associated tiling and piping issues, install a new boiler and expand a cabinet to fit it, and repair several smaller problems with leaks and fixtures. They are always extremely professional, on time, and tidy. The problem with the broken boiler, on a freezing winter's day, was handled immediately and they had heat and hot water restored by the following day. I can't recommend Pimlico enough. I wouldn't trust anyone else. L. Dunlap, South Kensington