That bothers me, too"The husband of one of those cyclists told road.cc via Facebook that police proceedings are now under way against the motorist."
That 'independent witness' thing is darn weird though.
Someone tries to kill you and PC plod almost said 'not interested'.
That bothers me, too. The video makes it obvious what occurred, and would be very difficult to fake.
From what I read, it appears the woman quoted in the article just called in after experiencing a similar incident -without video or physical evidence. While I could see you could argue you need a corroborating witness if this just came out of the blue (i.e. you just didn't make it up to get a driver in trouble just because they annoyed you) she said she mentioned the video (or so I thought from the article anyway). Given that, you'd think she should be taken more seriously.
It also begs the question: if you report someone tried to knife/shoot you without other witnesses or physical evidence, would they also not take you seriously until you had a witness? I know it's not the same, but it can't be very often someone says they swerved from the other side of the road. I think if someone reported that to me I'd be inclined to take it very seriously.
And yes, this is definitely an advantage for having a head-cam without a doubt.