In the lengthy two-page letter to Rishi Sunak, he reveals that senior lawyer Adam Tolley upheld two of the eight allegations against him.

Mr Raab denied the allegations and requested an investigation into himself after two formal complaints were made.

The prime minister received the report on Thursday and had been considering the findings since - here's the full letter from Mr Raab, which Sky News' deputy political editor Sam Coates refers to as "bitter" and "personal".

Raab 'keeps word' - Politics live

"Dear Prime Minister,

"I am writing to resign from your government, following receipt of the report arising from the inquiry conducted by Adam Tolley KC. I called for the inquiry and undertook to resign, if it made any finding of bullying whatsoever. I believe it is important to keep my word.

"It has been a privilege to serve you as deputy prime minister, Justice Secretary and Lord Chancellor. I am grateful to have had the opportunity to work as a minister in a range of roles and departments since 2015, and pay tribute to the many outstanding civil servants with whom I have worked.

"Whilst I feel duty bound to accept the outcome of the inquiry, it dismissed all but two of the claims levelled against me. I also believe that its two adverse findings are flawed and set a dangerous precedent for the conduct of good government.

"First, ministers must be able to exercise direct oversight with respect to senior officials over critical negotiations conducted on behalf of the British people, otherwise the democratic and constitutional principle of ministerial responsibility will be lost. This was particularly true during my time as foreign secretary, in the context of the Brexit negotiations over Gibraltar, when a senior diplomat breached the mandate agreed by cabinet.

Read more:
Raab resigns after bullying allegations
The karate black belt MP who briefly ran the country

"Second, ministers must be able to give direct critical feedback on briefings and submissions to senior officials, in order to set the standards and drive the reform the public expect of us. Of course, this must be done within reasonable bounds. Mr Tolley concluded that I had not once, in four and a half years, sworn or shouted at anyone, let alone thrown anything or otherwise physically intimidated anyone, nor intentionally sought to belittle anyone. I am genuinely sorry for any unintended stress or offence that any officials felt, as a result of the pace, standards and challenge that I brought to the Ministry of Justice. That is, however, what the public expect of ministers working on their behalf.

"In setting the threshold for bullying so low, this inquiry has set a dangerous precedent. It will encourage spurious complaints against ministers, and have a chilling effect on those driving change on behalf of your government - and ultimately the British people.

"Finally, I raised with you a number of improprieties that came to light during the course of this inquiry. They include the systematic leaking of skewed and fabricated claims to the media in breach of the rules of the inquiry and the Civil Service Code of Conduct, and the coercive removal by a senior official of dedicated Private Secretaries from my Ministry of Justice private office, in October of last year. I hope these will be independently reviewed.

"I remain as supportive of you and this government, as when I first introduced you at your campaign leadership launch last July. You have proved a great prime minister in very challenging times, and you can count on my support from the backbenches. Yours sincerely, Dominic Raab."

The full inquiry has not yet been published by Downing Street, but Mr Raab in his resignation warned that the probe's findings would have damaging consequences for government.

The MP for Esher and Walton said he was "genuinely sorry for any unintended stress or offence that any officials felt, as a result of the pace, standards and challenge that I brought to the Ministry of Justice".

He also told Mr Sunak that he remained fully supportive of him and the government.