Sue Gray’s limited inquiry, published on Monday, contains some damning verdicts, with the main findings as follows.
Police investigating at least 12 events
Ms Gray looked into 16 separate gatherings across Downing Street and wider government between May 15, 2020 and April 16 last year.
Of those, her report sets out that the Metropolitan Police are now investigating all but four of those events.
Scotland Yard said it was investigating allegations spanning eight dates, but did not set out how many specific allegations they were looking at.
Gatherings include PM’s birthday and event in official flat
The dozen events being looked at by officers include a ‘gathering in the No 10 Downing Street flat on November 13, 2020, the night Mr Johnson’s former aides Dominic Cummings and Lee Cain left their roles during a bitter power struggle.
Police were also investigating the June 19, 2020 event in the cabinet room at No 10 to mark the prime minister’s 56th birthday.
Two other Downing Street gatherings that officers are inspecting took place on April 16 last year, on the eve of the Duke of Edinburgh’s funeral, when the Queen was pictured mourning alone.
Gray held back much of what she learned
Ms Gray conceded it was ‘not possible at present to provide a meaningful report’ about the ‘extensive factual information’ she has unearthed about the events under police investigation while officers were continuing their work.
She decided against publishing ‘factual accounts’ about the remaining four events, saying: ‘I do not feel that I am able to do so without detriment to the overall balance of the findings.’
Downing Street caved to pressure to concede it would ask Ms Gray to publish a fresh assessment after the police investigation concludes.
Failures of leadership and too much drinking
Despite that, Ms Gray was able to conclude: ‘At least some of the gatherings in question represent a serious failure to observe not just the high standards expected of those working at the heart of government but also of the standards expected of the entire British population at the time.’
She criticised ‘failures of leadership and judgment’ in No 10 and the cabinet office.
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‘Some of the events should not have been allowed to take place. Other events should not have been allowed to develop as they did,’ she added.
Ms Gray, who was for a time a pub landlady, called for a robust policy to cover drinking in government, saying that the ‘excessive consumption of alcohol is not appropriate.’