Britain's Olympians and Paralympians are travelling through the capital to celebrate the huge medal hauls of both teams.
An official memorial has been opened to remember a Red Arrows pilot who died when his plane crashed after an air display in Bournemouth.
Children who designed a memorial to honour a Red Arrows pilot have seen the structure taking shape for the first time.
The Red Arrows return to the Bournemouth Air Festival today - a year since one of their colleagues died in a crash after a display at the show. Flight Lieutenant Jon Egging's aircraft crashed near to the town's airport.
A memorial to a Red Arrows pilot who died when his plane crashed last summer, has officially opened in Bournemouth.
Flight Lieutenant Jon Egging was killed shortly after a display at the Bournemouth AIr Festival last August.
His wife Dr Emma Higgin was among those who attended the opening of the official memorial to him.
The Red Arrows flew over London to herald in the Olympic Opening Ceremony Celebration Concert in Hyde Park.
Manston played a key role in the London 2012 Games when the Red Arrows took off from the Kent airport to take part in the Opening Ceremony. During the day, the Red Arrows also conducted flypasts over London 2012 Live Sites including Edinburgh, Belfast and Cardiff.
The Red Arrows are preparing to take off from Manston airport in Kent tonight to take part in the London 2012 Opening Ceremony.
The Royal Air Force Aerobatic Team will do a flypast in formation over the Olympic Stadium at 20:12 tonight.
Charles Buchanan, Chief Executive of Manston Airport, said: “We're thrilled to play our part in such a momentous event. The entire world will be watching London over the next few weeks and to know that we had a role in the beginning of it all is very exciting.”
The display thrilled thousands of people,outside Buckingham Palace.
The Red Arrows are to return to the Bournemouth Air Show a year after their team mate Flight Lieutenant John Egging was killed during a display there. Nick Harper reports on how he will be remembered at this year's event.