'Extreme dancers' leap from Millennium Bridge to launch Surprises: Streb

Surprises: Streb is one of several high profile events being presented by the Mayor of London and London 2012 Festival as the city prepares to host the Olympic Games.

"I am thrilled that we've been able to bring Elizabeth Streb's incredible dancers to the capital," says Mayor of London Boris Johnson.

"In an unprecedented summer of supreme sporting competition and world-class cultural events, the awe inspiring jeopardy they will bring to our landmark buildings promises to be one of the most mind-blowing highlights of the year."

The second Surprises: Streb location was City Hall where dancers appeared on the roof of the building at 10am. It is 10 years to the day since the Greater London Authority moved into its headquarters on the More London Estate.

Later in the day the dancers appeared at the National Theatre and the London Eye on the South Bank.