Perry responded promptly to my request and turned up at the agreed day & time. He diagnosed the fault & presented options to help fix things, as we indicated that we did not want to spend lots on the repair of the central heating as we would be moving & changing the boiler & central heating in about 6 months. He carried out the work efficiently at the agree day/time. It is not working perfectly which he explained would happen as we did not want to spend loads on it. However it is working adequately for our purposes.
He also carried out sensible precautions at this time to guard us against infection.