Drivers in UK

Well, shucks, I was just traveling southbound on the M5 freeway in England, when suddenly only a meter away at the back end of my small car, appeared a large truck flashing it’s lights on full beam. All I could see were it’s lights and the registration-WH16HAA. This was at 1705 hours on 21/2/18. The driving really scared me, it was by anybody’s standards far below the standards of a reasonable driver and dangerous. Turned out he was not happy with 50mph and was trying to bully me to speed up. Saving himself seconds and risking lives in the process. He swerved and pulled out as soon as he could. It is a 4 lane road, pure discourteous driving. I would not recommend any company in transport who put this sort of driver on the freeways of the UK