That sad trouble causer will learn the hard way on his push bike, what a wreck less tool, bang side of my truck and your off under the wheels....... simple don't start something you can't finish.
I think this video will go viral and the company should respond with how they are going to deal with their driver. Perhaps the police will respond first.
30mph at the moment of near impact. While going round a roundabout. You could have reacted sooner if you had been going slower. Self incriminating really.
So by your own admission you had your eyes on the trailer and not paying attention to the rest of the traffic. Otherwise you would have been able to anticipate this better.
I see the video is locked to comments. Maybe it is being investigated by the police?