Tyler Hamilton has won the Sports Book of the Year award for his tell-all autobiography on the doping culture in cycling.
American Hamilton, 41, partnered Lance Armstrong in three of his seven Tour de France successes, and was himself banned twice from the sport for doping offences - in 2004, for two years, and then again in 2008, after which Hamilton retired from the sport.
Speaking of the success of the book, 'The Secret Race' , Hamilton said: "It's been bittersweet. I'm really proud of writing the book, doing the right thing and telling the truth, but not so proud of what's in the book.
"The truth needs to be told. This is just one story, there's a gazillion other stories like that, unfortunately.
"We need to figure out what happened in the past, why it happened and how we can prevent it from happening again.
"It's never too late to tell the truth."