Liberal Democrat leader Sir Ed Davey has called for Boris Johnson to go after the prime minister suffered an embarrassing defeat in the Tiverton and Honiton by-election.
The Conservatives lost the previously ultra-safe, Brexit-backing seat to the Lib Dems, with Richard Foord winning by more than 6,000 votes in a seat where the party came third in 2019.
The 24,000 deficit is believed to be the largest majority ever overturned in a by-election.
Speaking after the historic result, Mr Davey…