I do not normally write reviews, but on this occasion I felt I should. I am a retired air craft engineer and as such my work standards are perhaps higher and than many others. I engaged this company to exchange a domestic heating boiler and install a modern type including, controls and flue. This company easily reached my own standards in completing the work. The task was completed in less than two days whereas other tenders had offered three to five days. At no cost to me, additional piping work completed in the airing cupboard. They were courteous, punctual and extremely efficient and, on completion, all work areas were left in a pristine state. My wife has Alzheimer's disease but she was not disturbed in any way during the work. Everything was exemplary and I have no hesitation in recommending to everyone considering similar work.