Christmas parties row: Three gatherings to be investigated by top civil servant

Another December party: We are still trying to pin down the date of this one, but multiple sources have told the BBC there was a Christmas quiz for No 10 staff in the Cabinet Office, with invitations sent out in advance via email, telling people to form teams of six. Downing Street says it was a "virtual gathering" but sources at the event say there were groups sat together in the room.