Please report dangerous drivers to the police - Roadsafe. Report to plod, not just whinge here.

Today reminded me that it's not just cyclists that are the brunt of stupid drivers.
Riding down Chelsea Embankment this morning, fast moving traffic. I hear a 3.5 tonne lorry beeping madly at a moped rider, for no apparent reason - he was in primary position, the same speed as other traffic. The Lorry then came up alongside the moped and swerved into him, shoulderchecking him and sending him swerving across the other lane (luckily there was no traffic in it) towards the kerb, luckily he was able to bring the moped under control just before he hit the kerb, but it could have been really nasty. I then saw the moped rider banging on the window once he had caught the lorry up at the lights, then the lorry beeping at him again and turning right over the bridge.
unfortunately for the lorry driver, he didn't realise that I'd got his plate, and caught up the moped rider to give it to him along with my number and tell him that I'd happily be a witness.
The old boy on the moped was pretty shook up - said the Lorry driver was laughing at him when he was banging on the window, I hope he reports it.

great stuff. i hope i would do the same, but good presence of mind and quick action

Wouldn't knowing you're in the right help you stay calm?

hell no. good people would only be at risk of getting worked up if they were in the right