The International Olympic Committee has begun its final inspection ahead of the 2012 Olympics.
IOC President, Jacques Rogge, met Prime Minister David Cameron, who claims the Games will leave a lasting legacy.
“The Olympics and Paralympics will be the greatest show on earth,” Mr. Cameron said. “It’s an extraordinary honour for the UK and we intend to repay that faith.
“I believe the message is clear: London will be ready, on time and on budget.”
He added: “The true legacy of London 2012 lies in the future. Though much has been done, I am acutely aware that the drive to embed and secure the benefits of London 2012 is still to come.
“That is our biggest challenge. It’s also our greatest opportunity.”
The IOC is carrying out a three-day inspection of the facilities ahead of the Olympics, which starts on July 27.
Rogge has been impressed by what he has seen and believes London has provided a “legacy blueprint” for future Games to follow.
“London has raised the bar on how to deliver a lasting legacy,” he said.
“We can already see tangible results in the remarkable regeneration of east London. This great historical city has created a legacy blueprint for future Games hosts.”
Lord Coe, chairman of the London Organising Committee of the Olympic Games, said: “London 2012 will be a summer of sport and celebration like no other. But it will only be the start of the journey.
“My dream is that millions of young people, here and overseas, will witness the achievements of the finest sportspeople on the planet and be inspired to take up sport for themselves.”
The IOC inspection coincides with the publication of the government’s “Beyond 2012” document, which outlines the sporting, economic, regeneration and community legacy of the Games.