Britain's next prime minister could be known by Monday

Liz Truss walks back into 10 Downing Street after making a statement where she announced her resignation as British prime minister on Thursday.

The race to replace Liz Truss and become Britain's third prime minister since the start of the summer could be decided by Monday — with Boris Johnson among the expected runners.

Ms Truss's resignation came after just 45 days in office during which a mini-budget crashed the markets, she lost two key ministers, and lost the confidence of almost all her own MPs.