Im not even going to go there mate. 1st year HH falconer know it all
I am not qualified to give legal advice, but I suggest those interested refer to, and read fully, the Wildlife and Countryside Act 1981. {Section 5. 1 9e)}
I suggest it comes down to the words " subject to the provisions", and "authorised person".
If hawking from a mechanicaly propelled vehicle, by an authorised person in immediate pursuit of legal quarry is illegal, then so is shooting lamped rabbits/foxes with or without a vehicle, snares, and netting rabbits, as those same words prefix the relevent section in th