Exit paths: how Boris Johnson could be forced from power

Johnson could be deposed by a confidence vote or a visit from the men in grey suits – or he could simply walk out. Photograph: Frank Augstein/AP

By any normal metric it is fair to say Boris Johnson is doomed, given the scale of ministerial resignations and the number of backbench MPs publicly withdrawing their support. While Johnson has often defied normal political rules, it does seem a matter of when he is ousted from No 10 rather than if. But how? Here are some scenarios.

A change of party rules and new confidence vote