Victoria Pendleton claimed Great Britain's third gold medal in two days of competition at the London 2012 Olympic velodrome with a stunning triumph in the keirin.
Moments after watching Ed Clancy, Geraint Thomas, Peter Kennaugh and Steven Burke clock a world record three minutes 51.659 seconds to triumph by a supreme margin ahead of arch-rivals Australia, Pendleton delivered in her least favoured event.
In the event which begins behind a motorised Derny bike, the 31-year-old from Stotfold, who is set to retire after London 2012, stormed to victory. Guo Shuang of China was second, with Lee Wai Sze of Hong Kong third.
The win sparked jubilant scenes from coach Jan van Eijden, British Cycling performance director Dave Brailsford and head coach Shane Sutton and was Britain's third gold medal of the track programme after Sir Chris Hoy, Philip Hindes and Jason Kenny won the men's team sprint on day one.
It was Britain's third success from four events.