????
Did you buy your driving license?
The overtaking lane is for overtaking, after you are to return to the normal lane.
So you were speeding at 30% over the speed limit, in the wrong lane, and almost kill an innocent motorcyclist, that looking in his mirrors would have expected you to return to the correct lane, thus it being safe for him to move to the u-turn. Unfortunately for him your vehicle (either non-ABS equiped or with faulty ABS) was being illegally driven massively over the speed limit by a driver that wither doesn't know or doesn't care about the rules of the road.
Learn how to drive before you kill people.