Rishi Sunak third favourite to succeed Johnson, but there's no sign he will run

Bowing to the inevitable after mass resignations across his government, including that of top Cabinet ministers, Johnson on Thursday announced he is stepping down as leader of the Conservative Party, but will remain the UK Prime Minister till his replacement is chosen.

Rishi Sunak

Ben Wallace, who was the Secretary of State for Defence in underfire British Prime Minister Boris Johnson's government and is still holding the portfolio as a caretaker, has emerged as a possible favourite in an opinion poll to succeed Johnson.