A long-awaited report into alleged parties held at Downing Street during lockdown is to be released next week.
The enquiry from civil servant Sue Gray will be made public next week, after her investigations into reports of a culture of drinking at Downing Street.
Boris Johnson has urged politicians to wait for the results of the inquiry amid rumours of a leadership challenge, Birmingham Live reports.
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The Prime Minister continues to face calls to step down, with one MP defecting to Labour on Wednesday.
Former political aide Dominic Cummings is set to be quizzed by Ms Gray as part of the report.
Today, Health Secretary Sajid Javid said Ms Gray should be given the "time and space" to complete her inquiry.
He made clear that if Mr Johnson was found to have broken the law he would have to go.
"The Ministerial Code is very clear. If any minister from the Prime Minister down breaks the law, of course they shouldn't continue to serve as a minister," he said during his media rounds on Thursday morning.
"What I have just said is a general rule that applies to everyone. There is no exception to that rule."
Brent Central MP Dawn Butler said Parliament, and not the Prime Minister, should be in charge of the rulebook that ministers have to follow.
Labour former minister Ms Butler, who was kicked out of Parliament for calling Boris Johnson a liar, proposed the change as she pledged to "call out" ministers if she believes they are not being honest.
She has called for MPs on the Commons Standards Committee to be the ultimate judges of whether the Prime Minister and other Government figures have broken the rules.
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