We got a quote for a new lawn in our boggy, clover covered back garden (£600). we picked a local company that we'd seen at work in a neighbouring street, professional website, nice guy who came round. phoned him today to arrange when he could start the job, and he said he could do it this saturday, for 600 cash. now that sounds quite a lot of money to get out of the cash machine in one go (or several trips) and we're worried he's not paying VAT and is just going to bring a couple of mates and do some cheap work on the side.
would you be worried?