Supreme Court: Pictures from heated Commons debate
MPs returned to the Commons on Wednesday after the Supreme Court ruled that Boris Johnson's decision to suspend Parliament was unlawful.
Supreme Court president Lady Hale said on Tuesday that it was unlawful because "it had the effect of frustrating or preventing the ability of Parliament to carry out its constitutional functions without reasonable justification."
Attorney General Geoffrey Cox told the Commons that he was "disappointed" at the landmark ruling but respected the judgement.
Here are pictures of some of the key political events this week.
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Boris Johnson arrived back at Downing Street on Wednesday after flying overnight from a UN summit in New York.
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Former prime minister Theresa May arrived at Parliament to join her fellow MPs.
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Dominic Cummings, special political adviser to the PM, also headed to the Commons.
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Meanwhile, Labour leader Jeremy Corbyn (left centre) held a shadow cabinet meeting in Westminster.
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Liberal Democrat leader Jo Swinson (centre) spoke with her parliamentary colleagues at a press conference in London, saying: "We have always argued - and we continue to argue - that we should have that extension of Article 50 so that the Brexit deal can go back to the public."
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Exchanges in Parliament quickly became heated after business resumed.
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Speaker of the House John Bercow greeted MPs, saying: "Welcome back to our place of work."
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The Commons resumed business with an urgent question to the government on whether Parliament should have been suspended on the legal advice from Geoffrey Cox (above). Mr Cox said: "This Parliament is a dead Parliament... This Parliament is a disgrace".
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Labour MP Barry Sheerman was furious with Mr Cox, saying: "To come here with his barrister's bluster, to obfuscate the truth, and for a man like him, for a party like this and for a leader like this to talk about morals and morality, is a disgrace".
UK Supreme Court
On Tuesday, Lady Hale said the unanimous decision of the 11 justices meant Parliament had effectively not been prorogued - the decision was null and of no effect.
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Plaid Cymru MP Liz Saville Roberts (left), SNP Westminster leader Ian Blackford, and Green Party MP Caroline Lucas (right) celebrated outside court.
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Gina Miller, who led campaigners against the suspension of Parliament, said: "This prime minister must open the doors of Parliament tomorrow. MPs must get back and be brave and bold in holding this unscrupulous government to account."
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Protesters showed their delight at the ruling.
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Liberal Democrat MP Chuka Umunna was seen leaving the Millbank broadcast studios near the Houses of Parliament, giving a thumbs up after the ruling.
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Stanley Johnson, father of Boris Johnson, was also seen leaving the Millbank broadcast studios
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Jeremy Corbyn brought forward his speech to the Labour Party conference after hearing the news from court. He led calls for Boris Johnson to resign, saying he should "consider his position".
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Speaker of the House of Commons John Bercow confirmed that Parliament will resume on Wednesday at 11:30 BST.
Barry Sheerman / Caroline Lucas / PA Media
Following the ruling, Barry Sheerman MP (left) and Caroline Lucas MP (right) tweeted photos showing themselves sitting in the Commons.
Meanwhile, Boris Johnson was interviewed in New York, telling reporters "As the law stands we leave on October 31 and I'm very hopeful that we will get a deal."