The US Anti-Doping Agency have confirmed they are to file formal doping charges against Lance Armstrong which could see the cyclist lose his record-breaking total of seven Tour de France titles.

Lance Armstrong has renewed his attack against the United States Anti-Doping Agency by once again claiming the agency’s allegations are based on old, unproved claims.

Lance Armstrong was facing the prospect of losing his record-breaking total of seven Tour de France titles after the United States Anti-Doping Agency confirmed they had begun legal proceedings against the former cyclist.