“Critical Mass London is a mass cycle around central London. Anyone can get involved, just bring yourself and your bike down to the South Bank on the last Friday of each month, between 6.00 pm–6.45 pm under Waterloo Bridge.” I took this picture on 29 July 2005. Thanks to Doug, you can also watch a video of what it was like to be there. Great fun.
criticalmasslondon.org.uk