Reuben of River Tay Heating Ltd was the first to respond to my posting. He arrived promptly, found the leak quickly and resolved it efficiently. He was great at showing me what he was doing and explaining. He followed all Gas Safe regulations. He is friendly, straightforward, a good communicator and knowledgeable. We had a great discussion about combi boilers working with hybrid heat pumps as I need a new central heating system. I look forward to asking him to quote for that and I'd definitely hire him again!