“This blows the Prime Minister’s final defence out of the water.

“First he told the British public that all guidance was followed in Number 10.

“Then the Prime Minister was dragged to Parliament kicking and screaming to tell us he had drinks in the garden with staff – but did not know he was at a party.

“Now we find out he was warned these events were breaking the rules but dismissed staff as overreacting.

“There is a pattern of lying and holding the British public in contempt. He’s not fit to be Prime Minister and should resign.”