The London critical mass rides take place on the evening of the last Friday of every month. This is a largely informal grouping/event where people who are interested turn up at an appointed place. The event on Saturday was part of a broader campaign called 'Love London, Go Dutch' by the London Cycling Campaign, which is an established organisation with about 11,000 members. The aim of the 'Go Dutch' campaign is to improve cycling infrastructure in the city, pointing to the higher standards in some cities in continental Europe. The ride on Saturday was timed to coincide with the Mayoral elections next week and a lot of organisation and publicity had gone into drawing as big a crowd as possible. This was not an informal ride. Many local groups also arranged meeting points and feeder rides to the event. Cyclists who participate in critical mass also often take part in such organised rides in support of particular issues.