Sir Chris Hoy has made Olympic history by winning his sixth gold medal in the frenzied atmosphere of the velodrome.
Sir Chris's triumph in the keirin means he now has more golds than any other British Olympian - Sir Steve Redgrave has five.
His victory brings Team GB's tally to 22 gold, 13 silver and 12 bronze - making this the most successful Games in terms of gold medals since the London Olympics of 1908 and equalling the total number of medals won in Beijing.
After his victory Sir Chris rolled around the velodrome draped in the Union flag as the audience, which included Prince Harry, raised the roof. He told the BBC: "I am in shock. This is just surreal."
Earlier the new star of British women's cycling Laura Trott, 20, won the omnium - her second medal of the Games. An ecstatic Trott said: "I can't believe this is happening to me, I really can't. I am so happy."
But the outgoing face of British cycling Victoria Pendleton, 31, could only manage a silver in her sprint showdown with Australian arch-rival Anna Meares.
Earlier the Team GB gold rush continued as the dressage team of Carl Hester, Laura Bechtolsheimer and Charlotte Dujardin triumphed. And the Brownlee brothers raced to Olympic glory in one of the most dramatic races yet at London 2012.
Alistair Brownlee took gold and his brother Jonny won bronze despite being given a 15-second penalty. As he closed in on victory Alistair grabbed a Union flag from the crowd, wrapped it around his shoulders and walked triumphantly across the finish line in Hyde Park.
He waited to embrace his brother who had to fight incredibly hard to overcome the penalty given for mounting his bike too quickly after swimming the Serpentine.
There was further success in Weymouth as Nick Dempsey took silver in the men's windsurfing. But Phillips Idowu, the controversial 33-year-old Beijing silver medallist, failed to jump far enough to qualify automatically for Thursday's triple jump final.