You've found the car of your dreams online and what's more, it's cheaper than you expected! It may be a UK registered car but the seller claims to have taken it out of the UK for whatever reason.  The seller may offer to refer the sale to an independent 'middleman' (this is known as escrow) company that will only pass on your money to the seller when you are 100% happy with the car. The catch here is that the independent escrow company doesn't exist and you are left out of pocket without ever seeing the car.