A source claimed many staff were huddled by computers in their Downing Street offices, conferring on questions and drinking alcohol while the quiz was taking place.
The statement did not mention Carrie Johnson.
Scottish First Minister Nicola Sturgeon said: 'Boris Johnson must resign.
Attorneys argued in court over whether she should be allowed to travel to Toledo to visit her family while she's free on bail.
Mr Johnson became the first Prime Minister in history to be penalised for law-breaking earlier today after he was issued a fixed penalty notice along with his wife Carrie and Chancellor.
The basic values of integrity and decency - essential to the proper working of any parliamentary democracy - demand that he go.
December 17, 2020: Cabinet Secretary Simon Case, charged with probing Partygate, hosted a party after sending an email out to around 15 people in his Private Office titled 'Christmas Quiz'.
Description: Brooke posted this photo of the two in June of 2016, around the time that the affair reportedly began Assistant Washtenaw County Prosecutor John Vella said last week that they are looking into whether they may be more victims.