Please report dangerous drivers to the police - Roadsafe. Report to plod, not just whinge here.

It's undoubtedly the simplest explanation, that one of the drivers somehow misses the fact the lights are red and others follow them, a well-known effect in traffic. Here, I think they probably get 'lucky' because they're going through the All Green Pedestrian Phase, although that's not visible in the video. You can see some people crossing on foot in the background, but that's not at this junction.

That there is only a cycle contraflow lane but not full two-way working is not good; I noticed that when I observed the junction a while ago when the scheme (which is generally not bad, although not without problems) was completed. The behaviour of the drivers there is probably a continuation of how people drove when it was two lanes in that direction.

Obviously, the reason why the one-way (now with contraflow) is there is because if it weren't lots of drivers would drive around the Outer Circle to get to Camden, and TfL and Camden want them to 'turn right' at the pseudo-roundabout a little further on to go along the A5205 Prince Albert Road. As the filtering of the Outer Circle has proved terribly controversial and the scheme has been defeated for the time being, I don't expect too much progress to be made on that in the near future.