CJ Ujah: Great Britain lose Tokyo Olympics relay medal after doping violation

Great Britain have been stripped of the silver medal won in the 4x100m relay at last summer's Tokyo Olympics after team member CJ Ujah was found to have committed a doping violation.

Ujah tested positive for ostarine and S-23 after the event on 6 August.

The 27-year-old says he "unknowingly consumed a contaminated substance" and the situation is one he "will regret for the rest of my life".

London-born Ujah added: "I would like to apologise to my team mates, their families and support teams for the impact which this has had on them. I'm sorry that this situation has cost my teammates the medals they worked so hard and so long for, and which they richly deserved.

"I would also like to apologise to both British Athletics and Team GB. British Athletics has supported the relay athletes for years and this has been difficult for everyone involved in the programme.

"Representing my country at a second Olympic Games surpassed my childhood sporting ambitions and I will forever be devastated that this situation has marred the success achieved by the men's 4 x 100 relay team in Tokyo."

Ujah did not challenge the decision over his violation, which was made by the Anti-Doping Division of the Court of Arbitration for Sport (CAS).

Cas requested World Athletics - the sport's governing body - should consider its own actions, including the possibility of handing Ujah a ban from competition.

More to follow.