The Metropolitan Police are facing legal action by the Good Law Project should they fail to investigate a Christmas party in 2020 at Downing Street.
The Met Police have been put on notice last week that legal action will follow if they to do not investigate.
A spokeswoman for the organisation said on Wednesday uses the law to “protect the interests of the public,” and a claim has been filed in court.
The Good Law Project said in a statement on their website, “When we received the Met’s formal pre-action response to our judicial review claim, over its failure to apply the same criminal law to the Prime Minister as it applies to others, they told us not to publish it.
“We have never before been asked to keep a pre-action response hidden from you, our supporters and funders.
“Yesterday, we filed our claim in court.
“The Met now have until February 10 to provide their formal response.
“We also wrote to the Met telling them that when we get that response, we will publish the grounds for our claim.
“We will also publish their response.
“If they want to, we invite them to make an application to the court to continue to maintain this secrecy.
“If they make such an application, we will let you know. Our position on that application to the court will be that justice must be seen to be done.”
In December the Met Police said earlier this week that they will not investigate any parties which allegedly occurred last year whilst millions of Brits were in lockdown as there is an “absence of evidence.”
Last Friday, the Liberal Democrat leader Sir Ed Davey has said it is “clear to everyone” that the Prime Minister has broke the law ans he is calling on the Metropolitan Police to investigate the claims of parties at No.10
“The police don’t need the government’s permission to investigate a crime, and they mustn’t turn a blind eye to criminality just because it is committed by Boris Johnson.”
Scotland Yard has indicated that any investigation into lockdown gatherings will depend on evidence from the inquiry by Sue Gray, and it is has been said by The Times that she has not found sufficient evidence of criminality.