[user104658]

OK I just watched the video for the first time and;

"The row appeared to start after the driver pulled out in front of the bike on the busy London Road in Croydon, causing the cyclist to swerve."

What? That isn't even vaguely what happens and makes it sound like road rage? Yopu can quite clearly see that the bike pulls up alongside the car when it's stationary, there's a fairly long pause, and then the car tries to "escape", deliberately knocking the bike out of the way. It's not an accidental traffic issue leading to an attack! IMO the "victim" quite blatantly knows the attacker.