Nick Harris: Well back player walk-offs over racism, says union chief Carlisle

We'll back player walk-offs over racism, says union chief Carlisle

Tour de France winner Bradley Wiggins in the vanguard, they want to be seen as the pioneers of a new, clean era in cycling.

Some critics argue that Team Sky's 'no drugs' policy evidently failed in as much as it did not prevent past dopers from working with them.

Any confession by Armstrong could rest on whether he is guaranteed immunity from prosecution for perjury after lying in court cases in the past about his doping.