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It's the latest allegation to have emerged about a potential breach of restrictions in Downing Street.
Nigella Lawsons joked that a defence for the British Prime Minister's birthday celebrations in lockdown has inspired the name of her new cookbook.
A minister last night suggested Boris Johnson has been "ambushed with cake" when his wife organised a surprise gathering in the Cabinet Room.
It's the latest allegation to have emerged about a potential breach of restrictions in Downing Street.