After the three by-elections – in Uxbridge and South Ruislip, Selby and Ainsty, and Somerton and Frome – there will be three new MPs taking their seats in parliament.
The elections took place following the resignations of three Conservatives – Boris Johnson, Nigel Adams and David Warburton.
Labour’s 25-year-old Keir Mather was declared the winner of the by-election in Selby and Ainsty in North Yorkshire.
Mr Mather works as a senior public affairs adviser for the Confederation of British Industry and before that was a parliamentary researcher for shadow health secretary Wes Streeting.
At just 25, he is now the youngest MP in the Commons – replacing Labour’s Nadia Whittome as the so-called Baby of the House.
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The Oxford graduate, from Hull, has said his age means he can relate to younger voters who are struggling to get on the housing ladder and facing a lack of economic opportunity.
His campaign centred on the cost of living crisis, public transport and NHS waiting lists, as well as local issues such as flooding and sewage, and anti-social behaviour.
Labour overturned a Conservative majority of 20,137 with his win – the largest majority reversed at a by-election.
Mr Mather won 16,456 votes, compared to the 12,295 cast for the Tory candidate Claire Holmes. This equals a majority of 4,161.
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Labour: Today we have made history
Steve Tuckwell
Steve Tuckwell will succeed Boris Johnson as the Conservative MP for Uxbridge and South Ruislip, after a hard fought battle with Labour in west London.
Mr Tuckwell was declared the winner after a speedy recount – but he only secured a majority of 495.
The former postie is a lifelong resident of South Ruislip and has represented the area as a ward councillor since 2018.
He has sought to distance himself from Mr Johnson by focusing his campaign on local issues, declaring the vote a “referendum” on ULEZ – the controversial plan to expand the zone where people have to pay a £12.50 daily fee to drive in London if their vehicle does not meet emission standards.
Mr Tuckwell argues the charge will devastate businesses and cost families up to £4,500 a year.
Lib Dem Sarah Dyke, who lives in the Somerton and Frome constituency that she will now represent, has said her farming family can trace their local roots back over more than 250 years.
She has represented Blackmoor Vale on Somerset unitary council since the 2022 local elections, where she defeated Hayward Burt, CCHQ’s resident expert on conquering Liberal Democrats.
She holds the council’s portfolio for the environment and climate change.
She was selected as the party’s prospective parliamentary candidate back in May 2022.
Canterbury MP Rosie Duffield has resigned from the Labour Party.
The 53-year-old MP is the first to jump ship since the general election and in her resignation letter criticised the prime minister for accepting thousands of pounds worth of gifts.
She told Sir Keir Starmer the reason for leaving now is “the programme of policies you seem determined to stick to”, despite their unpopularity with the electorate and MPs.
In her letter she accused the prime minister and his top team of “sleaze, nepotism and apparent avarice” which are “off the scale”.
“I’m so ashamed of what you and your inner circle have done to tarnish and humiliate our once proud party,” she said.
Since December 2019, the prime minister received £107,145 in gifts, benefits, and hospitality – a specific category in parliament’s register of MPs’ interests.
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Ms Duffield, who has previously clashed with the prime minister on gender issues, attacked the government for pursuing “cruel and unnecessary” policies as she resigned the Labour whip.
She criticised the decision to keep the two-child benefit cap and means-test the winter fuel payment, and accused the prime minister of “hypocrisy” over his acceptance of free gifts from donors.
“Since the change of government in July, the revelations of hypocrisy have been staggering and increasingly outrageous,” she said.
“I cannot put into words how angry I and my colleagues are at your total lack of understanding about how you have made us all appear.”
Ms Duffield also mentioned the recent “treatment of Diane Abbott”, who said she thought she had been barred from standing by Labour ahead of the general election, before Sir Keir said she would be allowed to defend her Hackney North and Stoke Newington seat for the party.
Her relationship with the Labour leadership has long been strained and her decision to quit the party comes after seven other Labour MPs were suspended for rebelling by voting for a motion calling for the two-child benefit cap to be abolished.
“Someone with far-above-average wealth choosing to keep the Conservatives’ two-child limit to benefit payments which entrenches children in poverty, while inexplicably accepting expensive personal gifts of designer suits and glasses costing more than most of those people can grasp – this is entirely undeserving of holding the title of Labour prime minister,” she said.
Ms Duffield said she will continue to represent her constituents as an independent MP, “guided by my core Labour values”.