Here are a cooule of new additions -
To watch contra-flow bus lanes in operation in London - http://www.youtube.com/watch?v=jY0VeiJ1fz8
The above covers following locations - Russell Square, Picadilly Circus, New Oxford Street leading to Oxford Circus, Charing Cross Road near Tottenham Court (Tube station), London Road near Elephant & Castle tube station and finally Tooley street near London Bridge.
To watch a short video giving insight into workings of the pre-signal technology - http://www.youtube.com/watch?v=wV3pAjzVhfw
Use the HQ button on the bottom right of the Youtube display screen to watch in better quality.