Prime Minister Boris Johnson’s spokesperson has insisted "there was not a party" at 10 Downing Street last December, and the government has said no Covid guidelines were broken.
But a source has told the BBC that "several dozen" people attended a party on 18 December last year.
Ros Atkins investigates the gap between government assurances and available evidence.
Please subscribe HERE http://bit.ly/1rbfUog
#BorisJohnson #RosAtkins #BBCNews