My Interpritation of this from owning a car transporter trailer with a stock car on the back is
on my B licence
the mig can tow 1700kg so the trialer and contents can go up to this no problem but if the plate on the trailer say otherwise EG 2000kg thne that willbe 3700KG which is Catagory C land even if the trailer is empty!
i relised this when i first hired a trailer a brain James model the plate said 2000kg even though i had a toyota carina on the back which the whole load came to about 1600kg to the law I am towing illegaly
Also if the towing vehicle weight is 1400kg but could have a capacity to tow 2000kg you would need B+E licence
But on Class B licence i can tow a maximum of 1400kg with the same car used above
Hope this helps to understand the DVLAs Drivel
Also Did you know that on a catagory B licence you can now drive a minibus up to 16 passengers with out a class c licence as long as its not for hire and reward
