Hi I'm a tradesman, Gas engineer.
This site is a scam.
You have to pay £10 odd to be 'shortlisted' for a job which means you can just have the supposed customer details.
I did this twice and the 'customer' was some random call centre in London.
So I think they have people create fake jobs to get money from 'leads' fraudulently.
I can't be bothered to pursue just paid £18 to stop getting harassing emails and deleted account.