Towing...B+E clarification...Advice

[Niall]

EDIT:

Maximum authorised mass (MAM) means the weight of a vehicle or trailer including the maximum load that can be carried safely when it’s being used on the road.

Right - I've looked further, I'm talking out my ass.

So infact, this depends on the GVW of the Kuga. Which apparently is 2250KG - in which case you are definitely not allowed to tow that.

Kuga GVW (2250) + Tasty Ifor Williams (750) = 3000KG

You can stick 500kg on the trailer.

Ruan the GVW of the Kuga isn't 2250. Its towing capacity is 2250 (On a braked trailer).
so:
Car: 1540
Tasty trailer:750
=2290 leaving 1210kg trailer load (assuming this is below the trailer MAM)

Edit: figures from some towing website by the way so may not be correct but you get the idea