My boiler gave up the ghost in Jan and 3 months and four plumbers later still no joy. Two of them were highly aggressive from the minute they stepped in my house, and the others just couldn't, wouldn't do the job(It involved some diagnostic reasoning!). I then contacted Steve Bryant whose numbers are on other threads here on this site. I cannot recommend him highly enough. He was competent,intelligent and a pleasure to deal with. A proper engineer. The bill was very reasonable too. A gem!