Boris Johnson has insisted he will not leave No 10 despite a mounting revolt against his leadership.

Ministers and aides have continued to submit their resignations, while support is ebbing away from the Prime Minister among previously-loyal MPs.

But Mr Johnson is understood to have told allies that he is "not going anywhere" and his critics should "calm down".

On Wednesday morning, Robin Walker resigned as schools standards minister, telling the Prime Minister the "great achievements" of the Government have become "overshadowed by mistakes and questions about integrity".

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Will Quince, MP for Colchester in Essex, has quit as children and families minister, saying he could not accept being sent out to defend the Prime Minister on television with inaccurate information over the Chris Pincher row.

Laura Trott resigned as a ministerial aide, saying "trust in politics is - and must always be - of the utmost importance, but sadly in recent months this has been lost".

Their resignations followed a string of departures from the Government last night, led by Rishi Sunak and Sajid Javid, who delivered broadsides at Mr Johnson as they quit their Cabinet posts.

The Conservative leader faces a potentially difficult session of Prime Minister's Questions today, while he will also have to endure a grilling by the Liaison Committee of select committee chairmen and women - including some senior Tory critics.

Education Select Committee chairman Rob Halfon, one of those who will question the Prime Minister, said he would back a change in leadership, criticising not only a "real loss of integrity" but also "a failure of policy".

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But Mr Johnson has told friends he will continue to "smash on and deliver for the people who gave us a massive mandate", the Daily Mail reported.

"Everyone just needs to calm down, stop bickering and let us get on with the job in hand."

The Prime Minister's authority had already been damaged by a confidence vote which saw 41% of his own MPs withdraw their support in June.

The loss of crunch by-elections in Wakefield and Tiverton and Honiton later that month triggered the resignation of party chairman Oliver Dowden, while there is still lingering anger over coronavirus lockdown-busting parties in Downing Street.

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