Originally Posted by Phil
If you use one of the solid connectors that means noone has to be in the car behind (kind of like an A frame but all 4 wheels of the car behind can stay on the ground) then I think you are OK so long as the tyres are legal and it has a lightboard and reg plate.
If someone has to be in the car behind steering and braking etc then it needs tax, MOT and insurance AFAIK
even with a A frame you will need the car to be taxed mot'd and insured

if you use a dolly ie lifting the DRIVE wheels of the road then its classed as a trailer