The race to become Britain’s third Prime Minister in 2022 and the fifth since the Tories came to power a decade ago is now officially open – and the field has been narrowed down.

After a last-minute emergency change to the Conservative party’s rules earlier this evening, the leadership contest has been slashed back so that only three candidates can stand.

Sir Graham Brady, chairman of the influential 1922 committee, together with the party, have decided that potential candidates to succeed Liz Truss have to have a threshold of 100 nominations by Monday at 2pm.