An estimated one million revelers took part in London's gay pride parade Saturday, the BBC reported.

About 150 floats wound their way from Baker Street to Trafalgar Square, where the party will keep humming well into the night.

A float titled Gay Liberation Front at 40, celebrating the accomplishments of the gay rights group that organized the city's first gay pride parade, led the parade through the city's crowded streets.

London Mayor Boris Johnson called the party “one of the most highly anticipated events of the year.”

Johnson, who attended the parade, said that he was proud of his city's reputation “as a place where you can be yourself.”

The organizing committee of the 2012 Olympic Games inaugurated their gay pride pin badge at the parade. The pins, which feature the rainbow flag and the London 2012 Olympic logo, are also being sold at London 2012's online shop for £5 (about $7.60).

Gareth Thomas, the Welsh rugby player who came out gay last December, urged people to “wear their pin badge with pride” to help the committee “achieve greater inclusion in sport.”

Also among the crowd were openly gay Conservative policing minister Nick Herbert and Liberal Democrat equality minister Lynne Featherstone.

London is the host city of 2012 WorldPride, a two-week long touring gay pride festival taking place ahead of the Olympic Games.