In reply to tim000:
> do you get distracted by every bit of writing you see at the side of the road
Or trucks with signs on the back saying "Cyclists: if you can't see my mirrors, I can't see you".
I'm sure the cyclist in question is trying to use the notice to say "give me some room or I'll have evidence for a PRA Section 59", but the sad reality is that some drivers will respond badly, and the notice will have the opposite effect; the "don't tell me how to drive" brigade.
I've toyed with the idea of recording my journeys, and have played with a couple of cameras, but I think I wouldn't bring attention to them until evidence was required...