I've been driving for over 20 years and I can easily say that I've witnessed fewer drivers running red lights in that time than I did see cyclists running red lights in that short journey I made. One nearly knocked an old man down as he was going across a pedestrian crossing, which incidentally happened to me last year in London, as two bikes flew through pedestrians on a crossing.

I haven't seen this behaviour anywhere else so I'm not sure why this seems to profilic in London.