please keep us posted. johnson is facing fierce criticism. a leaked video shows senior downing street staff joking about a christmas party during last year's tier 3 lockdown. what does this reveal? >> reporter: brianna, it's hard to overexaggerate just how big of a scandal this is in this country. there have been reports of a christmas party at downing street. yesterday nail in the coffin. itv obtaining leaked video that shows senior aides laughing and joking about a christmas party that took place during lockdown last year. look at the video millions in this country have already watched. >> there was a downing street christmas party on friday night.