Mo Farah, the Somali-Britain, who won 5,000m and 10,000m gold at London 2012 and Rio 2016, said his decision was based on a desire to move back to London.

Alberto Salazar, Mo Farah’s coach, is being investigated by the US Anti-Doping Agency (USADA) after the BBC alleged the use of drugs at his US training base.

Farah will now work with Gary Lough, who previously coached – and is married to – women’s marathon world record holder Paula Radcliffe.