Critical Mass London is a mass cycle around central London to assert our identity as cyclists and celebrate the freedom we should enjoy as cyclists. Anyone can get involved, just bring yourself and your bike down to the South Bank on the last Friday of each month, between 6pm & 6:45pm under Waterloo Bridge. April 29th marks London CM's 11th birthday! Happy Birthday Critical Mass! Last year's 10th birthday ride was great with cake, samba drummers on bikes, free t-shirts handed out and hundreds of riders on a sunny evening which ended up with several Masses which split up in central London. http://www.criticalmasslondon.org.uk/