I was a victim of a rogue trader last May who were reported to Trading Standards, Gas Safe etc.
It also turned out that they were listed on Threebestrated.co.uk
This is a website that says they go through a 50 point check of a company before they can be listed.
I contacted threebestrated.co.uk to inform them that they had a rogue trader listed and that they must have slipped through the checks.
I received a response a few weeks later forwarding me on a message from the rogue trader that denies any wrongdoing.
I had expected from an website advertising traders as checked and trusted that the checks would be more involved than this as its quite obvious a trader would respond to say they had no knowledge if confronted directly.
I have forwarded on the trading standards case reference and urged them to actually check them out properly to ensure other people don't get targeted by them in future.
It goes to show that these online 'trusted' listings pages can't often be trusted themselves so wanted to warn others.