Boris Johnson declared he was "epileptically bored" with Covid during an "almighty row" about free testing, a former aide has claimed.
The former PM - who quit last summer following a string of scandals - is claimed to have flown into a rage with Sajid Javid when he "dug in" over lateral flow tests.
And on another occasion Mr Johnson exploded "f*** this s***" and suggested clearing out the Treasury as tensions with Rishi Sunak built up, it is alleged.