I can highly recommend Hampstead Heating & Plumbing. We had been without heat or hot water for 5 days, Walied came same day once I contacted him via mybuilder. He disclosed his fees upfront via e-mail. I found him honest and very reliable, he even texted me later that evening to see if all was OK with the boiler. There were a few more issues with the boiler, it was 12yrs old and knackered, at my request Walied replaced it. He was on time, polite, efficient and tidy. I will certainly use this company again in the future, very happy with the quality of the service and work.