Once the Olympic Flame is handed over in Athens, it will be transferred to Lands End where three-time Olympic sailing champion Ben Ainslie will be the first torchbearer in the final 70-day relay to the start of the Games.
London 2012 chairman Lord Coe - who carried the torch in 2004 and also for the 2010 Vancouver Winter Olympics - has described it as one of the "big moments" towards the Games.
He said: "I have seen hundreds and hundreds of citations of the people who are running. We have got from 12 to 100 (year-olds) with fantastic stories."
More top news
A man has been jailed for more than a year after he tried to blame his dog sitting on the pedals for his speeding at close to 100mph.
Comic Peter Kay is resurrecting his TV hit Phoenix Nights in two live stage show for Comic Relief.
As shoppers gear up for one of the biggest challenges in the bargain hunter's calender, Ashleigh Swan shares her top Black Friday tips.