Hundreds of fans have queued in London to catch a glimpse of the world's fastest man, Usain Bolt, as he signs copies of his new book 'Faster Than Lightning' in Selfridges.
At the launch of his new autobiography 'Faster Than Lightning' in London, the world's fastest man said: "If you want to be the best, or you want to strive for more, you've got to set goals in life."
British sprinter James Ellington has described winning bronze in the 4x100m relay before being disqualified as the "best and worst day" of his career.
Best and worst day of my athletics career so far all within an hour,we deserved better.
Thanks everyone for the support,we will be back and even better
British sprinter Adam Gelili has tweeted about his team being disqualified from the 4x100m relay at the World Athletic Championships in Moscow today:
Thank you all for the messages of encouragement. To be so close to receieving a medal and have it taken away is heartbreaking
As a team we will pick ourselves up and carry on until we get it right. Onwards and upwards!
BIg up to the GB 4x100m women on receiving the news for bronze. Extremely proud! Just a shame they don't get their moment on the podium
Great Britain has lost its bronze medal to Canada after being disqualified over the second changeover in the 4x100m relay.
Dwain Chambers crossed the line third but the change between Harry Aikines-Aryeetey and James Ellington took place outside the designated box.
Canada was then awarded third place on appeal.
"It's heart-breaking," Aikines-Aryeetey said. "We found out when we were walking to the medal presentation."
Team GB loses its bronze medal in the 4x100m men's final for an illegal changeover.
Usain Bolt and the Jamaica relay team won the 4x100m gold in Moscow, with the 100m champion finishing ahead of US rival Justin Gatlin in the final leg.
Great Britain wins bronze in the men's 4x100m final in the World Athletics Championships in Moscow, in a time of 37.80 seconds.
Usain Bolt and the Jamaica team have won gold in the men's 4x100m final in the World Athletics Championships in Moscow, in a time of 37.36 seconds.
Prime Minister David Cameron would "warmly welcome" a knighthood for Mo Farah after the athlete became the first Briton to win both long-distance titles at the Olympic and World Championships, The Sunday Times has reported.
The newspaper quoted Mr Cameron as saying: "The Olympic and world double-double is one of the great sporting achievements. If the honours committee were to recommend Mo for a knighthood, I would warmly welcome it.”
Farah completed the set with victory in the 5,000m at the Worlds in Moscow on Friday, after which he was widely proclaimed as Britain's finest ever athlete.