Oct 12, 2005 First missed test.

June 28, 2006 Second missed test. Tester arrives at Ohuruogu’s gym in Harrow, northwest London. They speak on the phone but Ohuruogu is told she must present herself at the gym within one hour. She opts not to make the 90-minute trip from her home.

July 25, 2006 Third missed test. Ohuruogu arrives to train in Mile End, East London, to discover a school sports day is taking place. She is forced to switch her session to Crystal Palace, but neglects to inform the testing authorities.

Sept 15, 2006 Handed one-year ban by UK Athletics backdated to August 6 for missing three tests and an automatic lifelong ban by the British Olympic Association (BOA).

Oct 11, 2006 Appeals to Court of Arbitration for Sport (CAS) against length of suspension.

April 4, 2007 CAS rejects appeal.

July 29 Lodges appeal to BOA for reinstatement.

Aug 5 One-year ban expires.

Aug 7 Chosen for World Championships in the 400 metres and 4 x 400 metres relay.

Aug 16 Wins Osaka warm-up meeting in 50.56sec, third-best time.

Aug 26 Wins World Championships heat in season’s best of 50.46sec.

Aug 27 Wins semi-final in personal best of 50.16sec.

Aug 29 Takes gold medal in final in 49.61sec.

Nov 27 Sports Disputes Resolution Panel overturns Olympic ban.