I need to engage a plumber in a distant town, for a job in a flat. I don't know any traders there. Are these Trusted Trader, Check-a-Trade sites any good? I wonder whether, if they need that affirmation, they are not very good. There is no chance of asking neighbours, as I am arranging this to be done without being there, I will only go there when the job will actually take place. The alternative is to just use the Phone Book, while it still exists, and try whoever is in there.
Any ideas?