I have found a plumber!(posted 8010 days ago)Oliver Rebellato
Corgi Registered, plumbing and heatingFlat 2, 235 Kennington Lane, London SE11 5QU
T: 07748 986 519 F: 020 8458 6965
My combi boiler was continually overflowing, so I paid Pimlico Plumbers £120 to service the boiler and replace the pressure-release valve, which made absolutely no difference. Oliver released water from the system and it's fixed!