Commons speaker John Bercow has become embroiled in yet another spat with MPs after allowing a controversial Brexit vote to go ahead.
Mr Bercow sparked uproar on Wednesday when he selected a proposal which would force Theresa May to set out her plans earlier than expected.
In allowing a vote on the 'Plan B' amendment to go ahead, Mr Bercow both defied No 10 and the advice from his own clerks in the House of Commons.
Ministers also argued that the Government-tabled motion was not amendable, meaning it should not have been tabled for a vote. Mr Bercow was accused of ignoring centuries of precedent.
But this is not the first time that Mr Bercow has caused controversy during his time as Commons speaker. Here, the Standard takes a look at his five most controversial moments.
1. Accusations of bullying
Mr Bercow faced calls to quit as speaker last year following an independent probe into claims of a bullying culture in the Commons.
Not only did he face intense pressure to stand down over his leadership on the issue, he was also accused of bullying officials - claims he strongly denies.
His role came under scrutiny because of historical allegations that he shouted at and swore at staff.
Former private secretary, Angus Sinclair, told Newsnight that Mr Bercow tried to physically intimidate him.
The Speaker was also alleged to have bullied former private secretary, Kate Emms. He denied all the allegations.
2. Accused of calling Andrea Leadsom a "stupid woman"
Mr Bercow is said to have called leader of the House of Commons Ms Leadsom “f****** useless” and a “stupid woman” in the chamber.
He is alleged to have muttered the foul-mouthed outburst in May last year after berating Ms Leadsom for the way ministers were conducting business.
Ms Leadsom was reported not to have heard the comments. The Speaker's office acknowledged "strong and differing views" had been expressed in the chamber on an "unusual and controversial day" in Parliament.
However it insisted that Mr Bercow treated MPs with respect while seeking to facilitate the work of the House.
3. Commissioning a taxpayer-funded '£37,000' portrait of himself
Mr Bercow faced accusations of vanity after commissioning a portrait of himself which reportedly cost the taxpayer £37,000.
The painting, which hangs in the Speaker's House alongside those of former Speakers, cost £22,000 while "framing and heraldic painting" cost a further £15,000.
The portrait, which shows Mr Bercow on duty in his chair in the Commons, was added to the Parliamentary Art Collection. It was criticised as a "vanity portrait" for its "excessive" cost to the taxpayer.
House of Commons Curator Malcolm Hay said the artist had done well in "capturing Speaker Bercow's presence".
4. Revealing he voted Remain in the 2016 referendum
The Speaker of the House of Commons is expected to be politically neutral - but in 2017 he told students at Reading University that he had voted Remain the EU referendum.
According to the Sunday Telegraph, he told students that he thought it was "better to stay in the European Union" than "thinking you can act effectively on your own".
The newspaper also reported that he was concerned that the Labour Party could have done more to strike a "very clear Remain note".
This lead to accusations that he was no longer impartial but a spokesman said it did not affect his ability to carry out his role.
He also came under fire after a car was spotted in his parking space with a "B******* to Brexit" bumper sticker - he insisted the car was his wife's.
5. Accused of overruling the Government and handing power to MPs
Mr Bercow was accused of defying the Government yesterday and breaking centuries of precedent after allowing a vote on the Brexit amendment to go ahead.
His decision drew furious derision from a swathe of Tory MPs, some of whom directed cries of "pathetic" and "nonsense" at him.
Amid at times chaotic scenes in the Commons, prominent Brexiteer Crispin Blunt claimed there was now an "unshakeable conviction" among many that Mr Bercow was no longer a neutral referee.
Ministers believed the amendment should not have been tabled for a vote, and the original business motion was put "forthwith", which was previously taken to mean that it should be dealt with without a debate or chance of amendment.
The Leader of the House Andrea Leadsom said there were "some concerns" about his decision and asked him to confirm it was taken with "full advice" from the Commons clerk Sir David Natzler.
