Peak Plumbing

Take a look at this plasterwork:
installed by Stephen (Steve) Peak of Peak Plumbing.
Peak Plumbing installed a boiler which leaked gas. They were called out, given an opportunity to fix it, but having made a brief visit, told me that if there were any further problems I should contact the boiler manufacturer, and left without fixing the problem.
Worried and concerned, I called Gas Safe who sent an inspector. Upon entering the kitchen (and before even approaching the unit) the inspector told me I had a serious gas leak. After inspection, he shut the boiler down straight away. He then prepared a report, which made several points, one of which said the gas supply defect was classified as immediately dangerous. The nut on the boiler isolation valve was hand tight only (i.e. the inspector was able to unscrew the nut by hand).
Gas Safe instructed Peak Plumbing to fix the boiler. They made inspections of the work during and after the corrective measures, to ensure that the work was safe.
The boiler, chosen by the company, continues to function in an unsatisfactory manner, with very poor output of hot water.
Several letters were sent, and it was only when one was sent signed-​for delivery was a response received, which did not address the main areas of complaint to my satisfaction. The matter has not been resolved to my satisfaction.
Highly unsatisfactory, expensive and personally distressing experience. When I think about family and friends who stayed with me over Christmas, when, unknown to me, the boiler was unsafe, I shudder at the thought of what might have happened.