They've been described as 'the beating heart of the Olympics'. Without them the games simply would not have happened. In fact, our army of Olympic volunteers did such an incredible job that the Mayor's office is now stepping up plans to get them involved in other major events.
And this afternoon thousands of those volunteers packed into Trafalgar Square as Boris Johnson paid tribute to them with a special carol concert. Toby Sadler was there.
Trafalgar Square's world famous fountains are going to be turned purple and magenta today in a festive tribute to the London 2012 volunteers.
An audience of 3,500 volunteers, including Team London Ambassadors, London 2012 Games Makers, travel ambassadors and other Olympic volunteers, will be special guests at a carol concert at the central London landmark. The ticketed event is hosted by London mayor Boris Johnson.
In light of the successful use of the mayor's 8,000-strong team of volunteer ambassadors at the London 2012 Games, volunteers are to have a permanent presence in the capital.
They are set to be deployed at large scale events such as the New Year's Eve fireworks display and the Union of European Football Associations (UEFA) Champions League Final.
Mayor Boris Johnson will today be joined by gold album selling opera duo Jonathan & Charlotte for a magenta and purple Christmas celebration.
In recognition of the work of the Team London Ambassadors, Games Makers,Travel Ambassadors and other Olympic volunteers, the Mayor is hosting a ticketed Carol Concert in Trafalgar Square.
An audience of 3500 volunteers will be treated to a performance by Jonathan & Charlotte and two accomplished 17 year olds from Essex, who shot to fame when they performed on this year's Britain’s Got Talent.