The Tory MP, who had been the chair of the cross-party group since 2020, came under pressure to quit after sharing the clip on X, the platform formerly known as Twitter, where he appeared to praise the Taliban's leadership in Afghanistan.

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Four members of the committee tabled a motion of no confidence against him within days - the first time this measure to remove a committee chair had been used - and a vote was expected to take place by this Thursday.

But a source told Sky News the committee chair "resigned before he was pushed" on Wednesday.

In a statement, Mr Ellwood said he had made the decision with "deep regret" and was "proud of the hard-hitting inquiries" the committee had carried out.

"I believe I have a strong voice when it comes to defence and security," he added. "I stand up, speak my mind, try to see the bigger picture and offer solutions, especially on the international stage, as our world turns a dangerous corner.

"I don't always get it right - so it's right I put my hand up when I don't."

The senior backbencher admitted to "poor communications" on his part over the video, saying it was "understandably criticised at the time and reflected poorly on the committee".

He added: "Whilst I do believe I retained support of the majority of the committee, its dynamic and effectiveness would simply not be the same, and prove a distraction, if all in the room were not supportive of the chair."

Mr Ellwood shared the video in July showing him visiting Afghanistan, just under two years after the country was seized back by the Taliban.

Since its return, the Taliban has reinstated bans on education for girls and introduced laws stopping women from going to work, as well as outlawing women's beauty salons and preventing women from being in public spaces, such as parks and gyms.

In the clip, the Tory MP - whose brother was killed by Islamist extremists - said the "war-weary nation" was now "accepting a more authoritarian leadership in exchange for stability".

He urged the UK to reopen its embassy in Afghanistan - saying: "If the EU's embassy can open up, so can ours."

And he said: "Shouting from afar will not improve women's rights."

After a huge backlash from politicians, human rights campaigners and women's groups, Mr Ellwood apologised, saying his "reflections" after a "personal visit" to Afghanistan "could have been worded better".

But he appeared to defend some of his initial thoughts - reiterating that "our current strategy of shouting from afar, after abruptly abandoning the country in 2021, is not working".

Mr Ellwood argued: "My simple call to action was to see our embassy reopen again and pursue a more direct strategy to help the 40 million people we abandoned."

It is not yet clear who will replace Mr Ellwood as the committee chair.