Senior UK civil servant Sue Gray has finally published her long-awaited reports into coronavirus lockdown-breaking parties, containing numerous pictures of UK prime minister Boris Johnson surrounded by alcohol. 

Johnson is expected to address parliament and hold a press conference on the report's findings. The BBC reported the prime minister will to take "full responsibility for the findings."

For months, evidence of alcohol-fueled parties at Downing Street has dripped out into the media, forcing Johnson to apologize, change the team at his office and promise a reset to restore his authority.

But his actions have failed to stem a steady drumbeat of calls for his resignation. Some lawmakers say his position is untenable if he lied to parliament, a matter under investigation by parliament's Committee of Privileges.

Ministers say he has not misled parliament.

Gray's report follows new revelations of what went on inside Downing Street when coronavirus rules meant people could not socialize outside their households or even, in many cases, attend funerals for loved ones.

Late on Tuesday, the BBC's Panorama program cited insiders as saying staff crowded together at such events and how, sometimes in the morning, when arriving for work, they were met with bottles littering parts of the building. Some parties went on so late, they said, some people ended up staying all night. 

On Monday, photographs published by broadcaster ITV appeared to show Johnson on November 13, 2020, making a speech and raising a toast, with a glass in his hand, standing next to a table on top of which are several open wine bottles.