The majority of Warren Gatland's playing and management squad landed at Heathrow at dawn and brought with them the Tom Richards trophy, having beaten the Wallabies 2-1.
The Lions achieved only their fifth Test series victory in 125 years, and their first since South Africa in 1997, with a record 41-16 victory in Sydney. While the Lions celebrated, Australia coach Robbie Deans lost his job.
Sam Warburton clutches the Tom Richards trophy
Andy Murray's Wimbledon triumph completed a memorable weekend for British sport and Chris Froome retains the Tour de France yellow jersey while today, England cricket captain Alastair Cook leads his team into the Ashes series.
Twelve months on from the glories of the London 2012 Olympics, Britain is in the grip of another stellar summer of sport.
The Lions launched it with their historic triumph Down Under. After scraping a victory in the first Test and then losing by a point in the second, the pressure on Gatland's men was intense.
Gatland made the biggest selection call of his career when he dropped Brian O'Driscoll and he was shocked by the criticism that came his way but the Kiwi was vindicated by the Lions' thundering performance.
Roared on by 30,000 red-shirted supporters, the Lions stormed to a four-try victory on the back of an awesome scrummaging performance and some touches of genius from Leigh Halfpenny, who was named man of the series.