Jubilation: Florence Rowe, 81, who saw the Olympics in London in 1948, is cheered by the Camerons as she carries the flame in Downing Street yesterday.(Photo/Daily Mail)

(Lights fantastic: A dazzling firework show illuminates the Olympic stadium and Anish Kapoor's sculpture Orbit , during rehearsals in Stratford, East London.Photo/Daily Mail)

Open flame: The Olympic Torch is carried on top of an open top bus down Oxford Street as it nears the end of its 70 day journey.(Photo/Daily Mail)

Thousands of spectators cheer on the Torch Relay along Regent Street in central London just a day before the opening ceremony. (Photo/Daily Mail)

Fans scream as they watch boyband The Wanted performing next to the Olympic Torch in Hyde Park on the eve of the Opening Ceremony. (Photo/Daily Mail)

Standing in wait: Fans gathered at Hyde Park as they prepared to watch the celebratory finale concert.(Photo/Daily Mail)

The London Olympic Torch Bus slowly makes its way through the crowds along Oxford Street as thousands attend to see it on its way to Hyde Park.(Photo/Daily Mail)

At last! Britain is on its marks, set, and ready to go.

With the nation’s feel-good barometer soaring, hundreds of thousands lined the streets of London in brilliant sunshine yesterday to give a spectacular welcome to the Olympic torch ahead of tonight’s opening ceremony, which will be watched by a global television audience of four billion.

After seven years of planning and a 69-day trek covering 8,000 miles, the flame that was ignited ten weeks ago in Olympia completed the final leg of its journey in a blaze of glory.

(Agencies)