I wouldn't move for them if they do it again. The lane is occupied and they're trying to force other cars off the road..get it on the cam and don't move. People like that only understand one language..
What date is that "sir"? i asume you are the small child with the big nose who was driving? Learn to look when you are pulling out and check the highway code you lil chav.
Why did you go down the middle of the two lanes when there is a centre of the road option?