Criminal investigators have gone under examination over their examination concerning lockdown-breaking parties after the PM was just fined once however was imagined at different occasions – that government worker Sue Gray has affirmed he was at.

Sir Stephen House, giving proof to the London Assembly’s police and wrongdoing board, protected the almost four-month examination concerning lockdown-breaking parties in Downing Street and Whitehall.

The examination has gone under analysis for just fining Boris Johnson once, particularly after the Sue Gray request, distributed on Wednesday, uncovered many examples of celebrating in Downing Street while COVID limitations were set up.

Tested over why the state leader didn’t get a fine for going to a leaving party for his previous correspondences chief Lee Cain on 13 November 2020, during England’s second public lockdown, Sir Stephen said he was “sure of the trustworthiness of the choices” taken.

Photographs of the social event, with the PM toasting partners, arose two days before Ms Gray’s full request was distributed.

Sir Stephen said officials had “took a gander at many reports, including messages, electronic entryway logs – as such, individuals in and out at different times – journal sections, witness explanations, photos, CCTV pictures, and we sent surveys to individuals who we felt might have penetrated regulation”.

“The clarifications that were given in the poll were undeniably thought about cautiously,” he said.

A few social events we chose were not business related, and a few we chose were business related.

The acting official, who is in post until a swap is found for ex-manager Dame Cressida Dick, said fines were just given in situations where officials were certain a conviction could be gotten whenever tested in court – something the Met made sense of when it closed the request a week ago.

He said they thought about a few viewpoints:

• The idea of the social occasion

• Various periods of the social occasion

• Measure of time spent there by a member.

Sir Stephen added that analysts “basically, cross-referred to the proof to distinguish whether the person, on a full thought of the multitude of realities that we had, including their own record, did or didn’t have a sensible reason for their cooperation in the social occasion”.

In the event that the case were prosecuted, at the end of the day, assuming we gave a proper punishment notice and it was declined and someone said no, I need to go to court, then, at that point, we had the proof that we thought would provide us with a reasonable possibility of a conviction,” he added.

“I accept that the choices that my officials made depended on current realities and were legitimate.”

Sir Stephen has likewise kept in touch with London Mayor Sadiq Khan after he was approached to give “a more definite and formal clarification” of how choices were made.

The senior official said in his letter that he comprehends “serious areas of strength for the, sentiments and feelings for this situation” and that people in general would like greater lucidity.

“I might want to console you and the public that the Met has gone about its business to uphold the law cautiously, completely, proportionately, fairly, without dread or favor,” he said.

Sir Stephen added that the Met had a “common guideline” of not researching claimed lockdown breaks reflectively however did as such in Downing Street and Whitehall’s case since they felt:

• It was proportionate to do as such as there was proof those included knew or should have realized they were completing an offense

• By not exploring they would essentially sabotage the authenticity of the law

• What’s more, there was little uncertainty around the shortfall of any sensible guard.

In the letter to Mr Khan, Sir Stephen said it wouldn’t be “predictable with our strategy and practice all through the pandemic, or reasonable for the people concerned – at various degrees of position” to delve into subtleties for each case as this would risk recognizing them.

He added that he knows the police guard dog has been approached to investigate the Met’s examination (by the Lib Dems) and they will “obviously coordinate completely with any investigation they bring to this”.