Jeremy Corbyn has called on opposition party leaders and MPs to support a Labour-led vote of no confidence in Boris Johnson's government.

The Labour leader says that removing the Conservative Party from power would allow him to become the prime minister temporarily, and use the office to prevent a no-deal Brexit from taking place.

Earlier this month Jo Swinson, leader of the Liberal Democrats, said that Mr Corbyn was unsuitable to be prime minister if Mr Johnson was successfully ousted, and suggested Labour and Conservative party grandees Harriet Harman and Ken Clarke as possible alternatives.

Any replacement of Mr Johnson as prime minister would require a majority of MPs to vote against the Government in a confidence vote

But what is a no-confidence vote, and how could it take place before Oct 31?