Christine Ohuruogu was suspended from competing in the 2006 European Athletics Championships. The reason for this was that she missed three out-of-competition drug tests, known as the "whereabouts" system, of the World Anti-Doping Code; one in October 2005 and two in June 2006. According to IAAF and British Olympic Association rules, she received a one-year ban for missing these tests, which expired on 5 August 2007.
The British Olympic Association also imposed a lifetime ban excluding Ohuruogu from competing at future Olympic Games for Great Britain. She appealed to the Court of Arbitration for Sport, but the original decision was upheld. Ohuruogu submitted a further appeal, and stated that she would probably leave Britain and compete in the Olympics for another country if it was unsuccessful. Her Olympic ban was finally overturned on 27 November 2007.