Unimog Club UK

I had a scout round for info on this and all I can find is......Definition of a Tractor?
Tractor used to be defined as "Mechanically propelled vehicle not constructed itself to carry a load other than equipment for propulsion, loose tools and loose equipment, uw not exceeding 7370kg" S.185(1) R.T.A. 1988
Motor tractor:

mechanically propelled vehicle which is not constructed itself to carry a load except water, fuel, accumulators tools and loose equipment and does not exceed 7370 kgs

So - be careful what you restrict yourself to? This is the definition for vehicle DVLA!