EDIT: I ought to say that I don’t think it’s a bad idea, especially given the number of people I know have been SMIDSYd in spite of their defensive riding. Injuries have been contested, whereas we all know that this sort of evidence can have some sway.
I had an ongoing debate with local police about why they wouldn’t accept video evidence of mobile phone use whilst driving. Still haven’t got a satisfactory reply. It seems if you’re caught using a mobile phone you merely need to claim to have been making a call to the emergency services which the police seem to think is completely unverifiable (despite there being clear records on a person’s phone and with their phone operator). Add to that I’m not sure why it’s acceptable to put other people’s lives in danger whilst making an emergency call was something else there wasn’t a satisfactory answer to either.
They did say that video evidence could be valuable in the event of an accident.
Always good to know that when someone’s put you in hospital they could be liable for a fine of £60 (less than a London parking ticket) and 3 points on their licence. That’s what the bus driver who ran me down by overtaking on the wrong side of the road into the path of an oncoming car, whilst I was indicating to turn right got.