Boris Johnson does not think he was attending a party in the image showing him raising a glass and surrounded by wine bottles at a leaving do, Transport Secretary Grant Shapps said.
Pictures were released on Monday showing the Prime Minister at a party in Downing Street in November 2020, during the second covid lockdown.
Asked last December in the House of Commons whether there had been a party in No 10 on that date, the Prime Minister said "no" and added he was sure the rules were followed at all times.