Chambers was cleared to compete on 10 June 2006, although his return was dependent on an agreement to repay prize money he won while using banned substances. He returned to competition on 11 June 2006 at the British Grand Prix and took third in 10.07 s, behind Asafa Powell who equalled his own world record. Chambers stated that his training regime with Bolt had helped him make a strong opening performance despite a long absence from competition. The result placed Chambers at the top of the British rankings and was the second fastest time by a European sprinter in 2006.