I had suffered the strange phenomena of having to run the hot tap to get the cistern to fill with water after use of the toilet. Nick took a couple of minutes to work out what the problem was and gave me an explanation. He fetched and fitted a brand new flush valve after carefully measuring for fit. All was done after protecting the floor with a waterproof covering and making sure that the correct size of flush valve was installed. Everything to do with the cistern was cleaned before being reinstalled. He is happy to explain to the uninitiated, like me, what he is doing and why. This is the second job done for me. A good blend of experience and up to date knowledge.