Very understanding, willing to come to assess problem as soon as able.(& the quickest out of the 4 Gas/fitters/plumbers I contacted) Couldn't believe how soon the job was completed...felt I could totally trust the guys. Clearly made an effort to leave things tidy, after completing the job. Also, willing to return, in the evening, to explain how the new boiler functions, as I was at work, when they fitted it. New Boiler and pipework looking very smart. Thank you Enflame !!