The head of the British Olympic Association, Bill Sweeney, said he believed the Games in Rio will be protected for clean athletes
Jessica Ennis of Great Britain celebrates winning gold in the Women's Heptathlon on Day 8 of the London 2012 Olympic Games at Olympic Stadium on August 2012 in London, England.
Track and field has been rocked once again after British Olympic hero's advisor Alberto Salazar was accused of doping by a TV documentary
♀ Blur speed movement British olympic track cycling at beijing 2008
A BBC investigation has uncovered claims of drug taking by British Olympic gold medallist Allan Wells