Simon Case hosted two parties at his office in December last year, according to a source. 

The Cabinet Secretary Mr. Case is expected to release the findings of his investigation into the Downing Street party that was held on December 18, last year.

But a whistleblower said events featuring alcohol and music were planned and organised by staff in Mr Case’s own Private Office. 

Oliver Dowden is a Cabinet minister and today stated that the investigation into Mr Case would vindicate the Prime Minister.

Guido Mr Case was not present, according to a source. However, he was seen calling out staff members during the party for a chat.

The source said that at most 15 people were present, including actual staff members. They claimed that a second party was held in December and featured drinks at Mr Case’s workplace before the event continued elsewhere.

A whistleblower said two events were held last December in Simon Case's  (pictured) Private Office despite coronavirus restrictions

A whistleblower said two events were held last December in Simon Case’s  (pictured) Private Office despite coronavirus restrictions

Oliver Dowden, a minister in the Cabinet, today said the Mr Case's investigation would 'vindicate' the Prime Minister (file image)

Oliver Dowden today stated that the investigation into Mr Case would vindicate the Prime Minister.

These events occurred just days prior to the Downing Street party on December 18. This is under investigation.

MailOnline has reached out to Cabinet Office for comments. 

The findings from Mr Case’s investigation into the scandal, aptly named Partygate, were not expected to be revealed today. They have now been delayed. 

Mr Dowden said he is ‘confident’ that an inquiry into alleged Covid rule-busting parties will ‘vindicate’ Boris Johnson’s assertion that no restrictions were breached.

BBC Radio 4’s Today broadcast featured the Conservative Party chairman saying: “I can understand and appreciate the perception created by media coverage around those alleged events that our party was not following the rules.

“I must tell you, there’s an ongoing investigation by the Cabinet Secretary. I am confident that this inquiry will support the assertion of the Prime Minister that all that occurred was in accordance with the rules.

“But I don’t mind the noise, and that it was concerning to voters. 

The investigation by Mr Case into Downing Street parties under lockdown will also include an examination of Boris Johnson’s conduct as host to a quiz-night.

By far the most damaging has been reports that a party was held at Downing Street during a 2020 Christmas lockdown when such festivities were banned, with a video emerging this week which showed staff laughing and joking about it.

Reports that Downing Street had a party in 2020 during Christmas lockdown were the most disturbing. Staff laughed and joked about this incident.

It prompted the tearful resignation of the PM's former press secretary, Allegra Stratton

Allegra Stratton, the former Press Secretary to the Prime Minister, resigned in tears.

Labour leader Sir Keir Sternmer charged Mr Johnson with breaking rules after it became clear that he was acting as an impromptu Quiz Master in Downing Street under Tier 2 restrictions. 

Johnson, in an image published by the Sunday Mirror is shown in front a No. Two colleagues are closely watching Johnson, one in Christmas attire, and the other with a Christmas hat.

It is thought that the quiz took place December 15, three days prior to Downing Street’s notorious party. 

Which parties are the Government said to have hosted last year, and at what time? 

DEEP STREET PARTIES  

Dom’s Gone Bash, November 13: Dominic Cummings asserts that the PM had a meeting at his grace-and favour apartment on November 13, 2013, the day after the adviser was removed from Downing Street. Cummings claimed that there have been other flat parties.    

The Last Day – November 27: The Prime Minister reportedly gave a speech at a packed Number 10 leaving do for a ‘senior aide’. According to sources, there were reportedly 40-50 people present.

Christmas party on December 18 Downing Street employees are said to have had a Christmas party. There were reports of dozens of people attending the event in festive jumpers. They also exchanged Secret Santa gifts. London was placed in Tier 3 restrictions December 16, which is the most restrictive level of freedoms that were available at the time. This bans people from different homes mixing indoors. Boris Johnson, Downing Street said that he did not attend.  

Quiz night – DecemberSources have told BBC the BBC that Number 10 employees were invited to a special Christmas quiz. All were invited and encouraged to join teams. According to one source, some of the participants were able to attend via Zoom. However others attended in person. They sat together in six-person groups. Downing Street insisted that the quiz was virtual. 

…AND ELSEWHERE ELSEWHERE IN WHITEHALL  

December 10 Gavin Williamson (then education secretary) hosted a Department for Education party for “up to 24 persons” on December 10. This gathering included food and drinks. The department has admitted the event happened.  

December 14,Around 25 people met in the basement office of the Matthew Parker St offices for the Conservative party. The Times reports that last night, advisers from Conservative campaign headquarters hosted an event with Shaun Bailey who was the unsuccessful candidate of London mayor.  

The Times cites government sources as saying that Cabinet Secretary “would examine credible allegations from other gatherings, and it is difficult to really claim that a picture of the prime minister does not constitute a credible allegation.”

Education Secretary Nadhim Zahawi defended the Prime Minister after it emerged Mr Johnson personally hosted a Christmas quiz in Downing Street last year. 

According to Mr Zahawi, Johnson did not violate any coronavirus rules when he took part in this event.  

Downing Street claims the quiz was “virtual”, but there are reports that staff were sitting in Number 10 with computers as they discussed questions and consumed alcohol. 

London, at the time of the quiz was Tier 2 and it meant that there could not be any mixing of houses indoors except support bubbles. There should also only have six people in the outside.

The Sunday Mirror reported Mr Johnson surprised staff by turning up on screen as quiz master for one round lasting between 10 and 15 minutes. 

A Number 10 spokeswoman said: ‘This was a virtual quiz.

Staff from ‘Downing Street were frequently required to attend the office in order to assist with the pandemic response. This may explain why some who attended the office could have remained at their desks.

“The Prime minister briefly participated virtually in a quiz, to show appreciation for staff’s hard work during the year.  

Staff reportedly held a Christmas bash in Number 10 on December 18, with a leaked video – filmed four days after the alleged gathering – showing senior Downing Street aides joking about a ‘fictional’ party.

A second reported Downing Street event – an aide’s leaving do which is said to have taken place on November 27 – was allegedly attended by the Prime Minister, who The Mirror said made a speech.

He is currently investigating the two alleged incidents, as well as the festive celebration that was held at Department for Education. Officials admit they did happen and express regret.

Since then, the Department for Work and Pensions has confirmed that Therese Coffeey’s staff drank alcohol and ate take-out on a variety of occasions during coronavirus restrictions.

The Sunday Mirror reports that politicians and their officials drank until the wee hours of the morning and then ordered food from the Whitehall Office of the Work and Pension Secretary.

Although the DWP confirmed that alcohol was sometimes consumed outside of Cabinet minister’s Whitehall Office, it stressed that this occurred while normal work hours were being maintained.

According to a source, the desks are located far away from each other and there is no party atmosphere.