Several months ago, maybe a year, there was a short video put up on the forum that had been stickied. It was taken from the perspective of a (probably British) cager driver and it demonstrated how easy it is to miss seeing a bike. I can't find it anymore and want to pass it along to friends. Anyone have a link. Not a very easy vid to watch. Thanks.
There are a ton of motorcycle safety videos out there but when you say British, I think of TAC. They're responsible for a lot of driving safety videos including motorcycle ones.
Here's one that may or may not be the one you're thinking of but if it isn't, look at the list of them on the right hand side of their page:
Youtube Motorcycle Safety Video
*** NEW ***
I think I found one that incorporates what you were looking for:
Motorcycle "THINK!" Campaign