While staying in Hampstead for holiday, we awoke one day to discover there was no hot water for our showers. We are from the US and were unfamiliar with the water heaters here and, to make matters worse, the private owner of our rental flat was traveling in another country and unreachable by phone. We called Culkin Plumbing and Heating and explained our predicament. He was very kind and understanding, even taking a moment to stop his route to another house call so that I could better hear him on the phone. He immediately recognized our boiler model and being generous with his time and expertise, talked me through a quick fix of adjusting the pressure, which immediately remedied the problem of no hot water. What a lifesaver! I highly recommend Culkin, who I found to be knowledgeable, honest, and most helpful!