Photo gallery: London celebration anticipates 2012 Olympics success
The one-year countdown to the 2012 Olympics got under way on Wednesday with officials bullishly predicting London was on course to deliver the best ever games with 12 months to go. International Olympic Committee President Jacques Rogge will extend a formal invitation to the world's athletes during a ceremony at Trafalgar Square in the culmination of day-long events to mark the one-year milestone.
Tom Daley
A synchronized swimming display takes place in the new aquatic centre dive pool at the 1 year to go ceremony in London, Wednesday, July 27, 2011. (AP Photo/Kirsty Wigglesworth,pool)
Tom Daley
A synchronized swimming display takes place in the new aquatic centre dive pool at the 1 year to go ceremony in London, Wednesday, July 27, 2011. (AP Photo/Kirsty Wigglesworth,pool)
Britain London 2012 Olympic
People cheer on as the Olympic clock, center, starts its one year counter down during the London 2012 Olympic one year to go ceremony at Trafalgar Square in London, Wednesday, July 27, 2011. (AP Photo/Sang Tan)
Britain London 2012 Olympic
The Olympic medals are seen on the hands of Chairman of London 2012 Olympic Games, Sebastian Coe, right, and Olympic gold medalist Kelly Holmes as the medals are unveiled during the London 2012 Olympic one year to go ceremony at Trafalgar Square in London, Wednesday, July 27, 2011. (AP Photo/Sang Tan)
Britain Olympics 2012
In this photo taken July 14, 2011 and made available by the Olympic Delivery Authority, an aerial view of the Velodrome, top, with the BMX track being developed, front, is seen at the Olympic Park, London. With exactly a year to go until the start of the London 2012 Games, the Olympic Delivery Authority, ODA, has announced that the Aquatics Center is now complete, the last of the six main permanent Olympic Park venues to finish construction. (AP Photo/Olympic Delivery Authority, Anthony Charlton) EDITORIAL USE ONLY
Tom Daley
British Olympic diver Tom Daley performs a dive into the new aquatic centre dive pool at the 1 year to go ceremony in London, Wednesday, July 27, 2011. (AP Photo/Kirsty Wigglesworth,pool)
Britain London 2012 Olympics
A swimming race takes place in the new aquatic centre swimming pool at the 1 year to go ceremony in London, Wednesday, July 27, 2011. (AP Photo/Kirsty Wigglesworth,pool)
Britain 2012 Olympics
British Sports and Olympic Minister Hugh Robertson, left, Chairman of the London 2012 Olympics Lord Seb Coe, center, and Olympic silver medallist Colin Jackson, right, stand with clay moulds, after having made impressions of their feet, at St Pancras Railway station in central London to celebrate the one-year-to-go mark Wednesday July 27, 2011. Robertson says the crush of people seeking to buy tickets _ 22 million requests for 6.6 million tickets available _ shows that interest in the London Games is unprecedented. (AP Photo/John Stillwell/PA Wire) UNITED KINGDOM OUT NO SALES NO ARCHIVE
Britain London 2012 Olympic
Olympic mascot Wenlock waves as its appears on stage during the London 2012 Olympic one year to go ceremony at Trafalgar Square in London, Wednesday, July 27, 2011. (AP Photo/Sang Tan)
Britain London 2012 Olympics
People cheer on during the London 2012 Olympic one year to go ceremony at Trafalgar Square in London, Wednesday, July 27, 2011. (AP Photo/Sang Tan)
Britain London 2012 Medals
In this image made available by the London Organising Committee of the Olympic Games on Wednesday July 27, 2011 show the London 2012 Olympic medals designed by British artist David Watkins. The front of the gold medal is displayed , left, the front of the silver medal, 2nd left, the front of the bronze medal 2nd right, and the back of the gold medal is at right. All medals will be 85mm in diameter. With one year to go until the opening ceremony of the 2012 Olympic Games, London organizers completed the last of the Olympic Park's permanent venues Wednesday July 27, 2011 and promised to put on a safe and spectacular event that will captivate the world. (AP Photo/LOCOG, HO) EDITORIAL USE ONLY
aerial
In this image made available July 25, 2011 by the London Organising Committee of the Olympic and Paralympic Games (LOCOG), an aerial photo of the London 2012 Olympic Stadium to mark "1 year to go to the Olympic Games" is seen in London. The number one mown into the grass in the Olympic Stadium indicates the start the celebrations for the "1 year to go" milestone. (AP Photo/LOCOG, Anthony Charlton) EDITORIAL USE ONLY
Britain London 2012 Medals
In this image made available by the London Organising Committee of the Olympic Games on Wednesday July 27, 2011 shows the London 2012 Olympic gold medal designed by British artist David Watkins. The back of the medal is displayed in this image all medals will be 85mm in diameter. With one year to go until the opening ceremony of the 2012 Olympic Games, London organizers completed the last of the Olympic Park's permanent venues Wednesday July 27, 2011 and promised to put on a safe and spectacular event that will captivate the world. (AP Photo/LOCOG, Ho) EDITORIAL USE ONLY
Britain Olympics 2012
In this photo taken July 14, 2011 and made available by the Olympic Delivery Authority, an aerial view of the Olympic stadium is seen at the Olympic Park, London. With exactly a year to go until the start of the London 2012 Games, the Olympic Delivery Authority, ODA, has announced that the Aquatics Center is now complete, the last of the six main permanent Olympic Park venues to finish construction. (AP Photo/Olympic Delivery Authority, Anthony Charlton) EDITORIAL USE ONLY
Britain London 2012 Year To Go
Synchronised swimmers perform to mark the one year countdown to the start of the London 2012 Olympics at the Aquatics Centre at the Olympic Park site,, in east London, on Wednesday July 27, 2011. The one-year countdown to the 2012 Olympics got under way on Wednesday with officials bullishly predicting London was on course to deliver the best ever games with 12 months to go. International Olympic Committee President Jacques Rogge will extend a formal invitation to the world's athletes la ceremony at Trafalgar Square in the culmination of day-long events to mark the one-year milestone. (AP Photo/Ben Stansall, Pool)
Jacques Rogge, Denis Oswald, Sebastian Coe, Princess Anne, David Cameron
From left, President of the International Olympic Committee, Jacques Rogge, Chairman of International Olympic Committee's Co-ordination Commission, Denis Oswald, Chairman of London 2012 Olympic Games, Sebastian Coe, Britain's Princess Anne and British Prime Minister David Cameron react during the London 2012 Olympic one year to go ceremony at Trafalgar Square in London, Wednesday, July 27, 2011. Look on at the back are. (AP Photo/Sang Tan)
Tom Daley
British Olympic diver Tom Daley performs a dive into the new aquatic centre dive pool at the 1 year to go ceremony in London, Wednesday, July 27, 2011. (AP Photo/Kirsty Wigglesworth,pool)
aerial
In this photo taken July 14, 2011 and made available by the Olympic Delivery Authority, an aerial view of the Velodrome with the landscaped Parklands, foreground, is seen at the Olympic Park, London. With exactly a year to go until the start of the London 2012 Games, the Olympic Delivery Authority, ODA, has announced that the Aquatics Center is now complete, the last of the six main permanent Olympic Park venues to finish construction. (AP Photo/Olympic Delivery Authority, Anthony Charlton) EDITORIAL USE ONLY
Britain London 2012 Medals
In this image made available by the London Organising Committee of the Olympic Games on Wednesday July 27, 2011 shows London 2012 Olympic gold medal designed by British artist David Watkins. The front of the medal is on the right, all medals are 85mm in diameter. With one year to go until the opening ceremony of the 2012 Olympic Games, London organizers completed the last of the Olympic Park's permanent venues Wednesday July 27, 2011 and promised to put on a safe and spectacular event that will captivate the world. (AP Photo/LOCOG, HO)

