Metropolitan Police
The London Mayor said the public's "trust and confidence" in the Met was at stake.
Report suggests PM told civil servant "it’s all out there" already.
The Metropolitan Police have informed Downing Street that no further action is being taken against the prime minister.
The force said Operation Hillman has now concluded, paving the way for Sue Gray's long-awaited report into the scandal.
The latest in a series of sexual misconduct allegations to shake Westminster.
The Met had been waiting for the local elections to be over before making the announcement.
Commons showdown looms as Conservative MPs will be ordered to vote for an amendment to Labour’s motion.
Senior ministers have insisted the public don't want Boris Johnson to resign if he is fined by the police.
Anne-Marie Trevelyan said those fined by the police had "broken the regulations" on Covid.
The Met's decision to issue fines to at least 20 government officials brings the partygate scandal right back to the prime minister's door.
About Metropolitan Police
The Metropolitan Police Service was founded by Sir Robert Peel in 1829. Today its head is commissioner Cressida Dick. The Met police has recently been subject to controversy over allegations some journalists gave money to police for information during the phone hacking scandal. A force is also known as "the Met", "Met Pol", "MP" and "the MPS" and has more than 31,000 officers together with about 13,000 police staff and 3,700 Police Community Support Officers (PCSOs). The MPS is also being supported by 2,500 volunteer police cadets and more than 5,000 volunteer police officers from the Metropolitan Special Constabulary (MSC) and its Employer Supported Policing (ESP) programme. The Metropolitan Police Services covers an area of 620 square miles and a population of 7.2 million.