It’s my belief that the roads are gradually becoming safer for cyclists - we are given more space and drivers are generally more considerate. You may feel that this is due simply to a change in the Highway Code - well, I don’t think it is. I think it’s due to the poor, and often dangerous, driving being reported to the police and the offenders being cautioned or prosecuted. You may feel it’s too much like “Big Brother”, your every move being monitored. You may feel differently though if it becomes the indisputable evidence that convicts the driver that knocks you off your bike!
A bit of an elderly thread but, in my opinion, yes we should, and I have, several times both here and back where I used to live in Cambridge. There have been several actions from the Police based on my evidence though I haven't been told what those are.
So I agree, we should submit video evidence