DickyNick:
The overtaking rule you mention applies to overtaking on a single carriageway. Take a look at the bit about using motorways and dusk carriageways and that’s different.The reason for the rule you state is to assist making it safe for an overtaking vehicle to move back in as soon as possible when on the opposite side of the road. Safety. Doesn’t apply on a road where you can’t go on the “wrong” side of the road.
You just ain’t listening are you.
Whether or not it is right or wrong what you done in terms of the law and regulations, it was grossly unprofessional…the whole point of your thread, unprofessionalism. 
If the guy you had kept out was as equally a twonk and just kept his speed up it would have become a ‘neither giving way ■■■■■■■ contest’ …as I said a true pro would have just let him crack on whilst calling him a ■■■■ under his breath, but certainly not adapting a ‘I’ll show him’ road marshalling approach, and then looking for credit for it, thus making a prick of himself on a truckers forum.