Concern about a trader who posts on here

I have had a bad experience with a trader who was recommended on the forum under the name Ed plumbing services, forum name Ed plumber.

We were unable to get hold of him after we'd parted with money, and I posted with our problem:

https://www.eastdulwichforum.co.uk/forum/read.php?30,2237808,2237956#msg-2237956

I see under the rules of posting for businesses 'Businesses must be based in East Dulwich and they must state their (trading) address' ? did he supply one?

I'm asking now because I have been pm'd to say that we're not alone, and I really want to just warn people not to pay up front and be wary. ?200 for materials turned out to be a foot of copper pipe :)