British cyclist David Millar has expressed dismay over what he believes will be Lance Armstrong's "stage-managed" interview with Oprah Winfrey.

The interview will be Armstrong's first since being stripped of his seven Tour de France wins following a report by the US Anti-Doping Agency (Usada).

However, Millar said Armstrong should be answerable to an official body.

"Only Lance would get to have his moment of truth, if that's what it will be, with Oprah Winfrey," said Millar.

"It is not sitting in front of a judge or a disciplinary hearing being properly questioned about the things he has done wrong. I doubt very much it will be a proper interrogation."

A spokeswoman for US talk show host Winfrey insisted no question would be off-limits.

Millar, who served a two-year ban after admitting to doping in 2004, is now a member of the athletes' commission for the World Anti-Doping Agency (Wada).

And the Scotsman fears the interview will focus more on Armstrong's emotions than any misdemeanours he might have committed.

Last week, the New York Times reported that Armstrong, 41, was considering publicly admitting that he used performance-enhancing drugs, in an apparent bid to return to competitive sport in marathons and triathlons.