I have used Richard twice now. He came and serviced the boiler in a timely and efficient fashion, no complaints. He really came into his own however when I had a loss of pressure in the system, and therefore no heating. I tried to rectify myself with the power of the internet (FYI you can't learn how to do this from a youtube channel!) It has been below zero - I put a call in and he was here at 8:30 the next morning. by 9:30 the heating was back on. There was a leak, he had to pull up the floor and do some pipework. I've not had the best of luck with plumbers, I've found the one now!