Boris Johnson attended leaving do during strict January lockdown

Exclusive: sources say PM dropped in at prosecco-fuelled farewell in 2021 now being investigated by police

Boris Johnson attended a prosecco-fuelled leaving do for a No 10 aide during the strict post-Christmas lockdown, which is now under police investigation, the Guardian has learned.

Sue Gray's investigation into lockdown parties this week revealed several events that had not previously been publicised, including a gathering on 14 January 2021 on the departure of two No 10 private secretaries". But the redacted report revealed no further details.