Bradley Wiggins was greeted by a deafening crowd at Hampton Court Palace as he claimed gold in the men's road cycling time trial.
Wiggins became the first man to win the Tour de France and Olympic gold in the same year with an imperious victory in the London 2012 time-trial.
The 32-year-old claimed his fourth Olympic gold and seventh medal in all, surpassing Sir Steve Redgrave with a British record haul of Games medals.
Wiggins was the penultimate of 37 riders to take to the course and completed the 44-kilometre route in 50 minutes 39 seconds to triumph by 42 seconds, with fellow Briton Chris Froome third in 51mins 47secs.
World champion Tony Martin of Germany clocked 51:21 to claim silver.
Bradley Wiggins' wife Cath and two children Ben and Isabella, were among those screaming with delight as he completed the 44-kilometre course in the fastest time.
Thousands of cycling fans waving British flags had lined the route, holding banners re-naming the day 'Wiggo Wednesday'.
They broke out into noisy chants of "Wiggo Wiggo!" as he secured the top spot.