Calls for PM to quit after officials seen laughing about 'Christmas party'

For several days Boris Johnson denied there was a Christmas party in Downing Street last December that breached lockdown rules.

But footage has emerged of the Prime Minister’s former press secretary apparently laughing about an alleged party.

Allegra Stratton jokes about a "business meeting" and a "cheese and wine" event that was "not socially-distanced".

The SNP is calling on the PM to stand down.