Impossible to know the circumstance with a static image such as this. I'm just trying to be fair to all sides and establish the facts. Were the police called?
About time the police had a crack down on delivery drivers, it seems to have got worse now the delivery companies offer "delivery windows" as the drivers are always speeding around to ensure they meet their targets. Those who don't meet targets are obviously given the sack....hence the bad driving standards.
Motorway looks quiet and lanes 2 & 3 almost empty in near distance judging by your camera.
Could you have pulled into empty lane 2 rather than carrying along at a slowish speed?
Not saying you're wrong but it avoids conflict and allows for faster moving traffic to safely enter the motorway and move along out of your way
Uses mobile phone while driving next to a school.