Sir John Major has said it is clear Boris Johnson broke Covid laws and warned he must quit if it's found he lied to Parliament.
In a scathing attack on the Prime Minister, the Tory grandee suggested that MPs had a "duty" to restore trust in politics or risk breaking the British political system.
Sir John attacked Mr Johnson's "foolish" behaviour, which he warned was undermining democracy, and said: “Deliberate lies to parliament have been fatal to political careers – and must always be so”.