One of the UK dealers or trim companies maybe Simmons had something similar as a demonstration platform.
I wonder where they get the certified tow bar and how legal it is to fit it to a car when the handbook clearly says "not suitable for towing". Or do 4 seaters have a dispensation?
If the vehicle isn't certified by the manufacturer there is no way around it. It is quite simply illegal. Get stopped it's 3 points and £100 fine.