"Good morning. I thought in light of recent events I thought I might reintroduce myself. My name is Lance Armstrong. I am a cancer survivor. I'm a father of five. And yes, I won the Tour de France seven times."

Lance Armstrong, the cyclist who won seven successive Tour de France titles, has been found 'a serial cheat' by the United States Anti-Doping Agency, in what they say is "the most sophisticated, professionalised and successful doping regime the sport has ever seen".

The detailed report says that it has found proof not only that Armstrong took performance-enhancing drugs, but that he also expected his team-mates to do the same.

But Armstrong's lawyer, Sean Breen, has dismissed the report, calling it a "one-sided hatchet job".

Armstrong himself has not contested the evidence, and John Fahey, the World Anti-Doping Agency President, said that the cyclists' silence confirmed there is truth in the allegations.

"By his failure to rebut the charged, very serious charges, he has effectively admitted that they have substance."

The 41-year-old American was already banned for life and stripped of his seven Tour de France titles. The Usada report labelled it "one of the most sordid chapters in sports history".

Written and presented by Alfred Joyner