Ian helped identify a fault with our electrics that had been caused by some other work that we had carried out by some builders and was causing our system to keep tripping. He was very responsive - came to take a look the same day and then to do the initial trouble-shooting the next day. It took three visits to resolve the issue entirely, but we only managed this thanks to Ian's evident expertise and persistence. He took time to explain what he was doing, which was reassuring and his rates were very reasonable. I wouldn't hesitate to recommend him.