Boris Johnson has repeatedly insisted he did not intentionally mislead Parliament over Partygate in a heated grilling by MPs.
Ednews reports the former prime minister began the marathon three-hour session with a Bible in his hands, as he swore: "Hand on heart, I did not lie to the House."
He admitted social distancing had not been "perfect" at gatherings in Downing Street during Covid lockdowns.
But he said they were "essential" work events, which he claimed were allowed.
He insisted the guidelines - as he understood them - were followed at all times.
But MPs challenged his assertions, with the committee head, Labour's Harriet Harman, at one point describing them as "flimsy", and saying they "did not amount to much at all".
He also clashed repeatedly with Conservative MP Sir Bernard Jenkin, angrily telling the senior Tory he was talking "complete nonsense" by suggesting he had relied too much on what political advisers were telling him.
The Privileges Committee is investigating statements Mr Johnson made to Parliament, after details of booze-fuelled parties and other gatherings in Downing Street emerged in the media from the end of 2021 onwards.
If he is found by MPs to have deliberately or recklessly misled Parliament, he faces suspension from the Commons - a move that might trigger a by-election in his Uxbridge and South Ruislip constituency.
