The old tap is leaking at the base but doesn't seem to be affecting the base cabinet ... yet. The leak needs repairing and tap changed.
Marius arrived on time, as arranged. The job was more complex than originally thought but he had the additional parts needed and he was finished within the hour. There was a small extra cost for parts that was very reasonable. He showed me the fittings under the sink, with no leaks and said to contact him if there were any problems. He was a polite, respectful, unobtrusive and tidy tradesperson. I would use him again and recommend him.