A by-election for the United Kingdom parliamentary constituency of Uxbridge and South Ruislip was held on 20 July 2023, following the resignation of former Prime Minister Boris Johnson as its member of Parliament (MP) on 12 June.

Quick Facts Uxbridge and South Ruislip constituency, Turnout ...

2023 Uxbridge and South Ruislip by-election

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Uxbridge and South Ruislip constituency
Turnout	46.2% (17.3 pp)
First party Second party   Lab Candidate Steve Tuckwell Danny Beales Party Conservative Labour Popular vote 13,965 13,470 Percentage 45.2% 43.6% Swing 7.4 pp 6.0 pp
MP before election Boris Johnson Conservative Elected MP Steve Tuckwell Conservative

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The Conservative Party's candidate, Steve Tuckwell, held the seat with a reduced majority of 495 votes. The result was considered an upset, as Labour had targeted the seat heavily; a large backlash against Johnson was expected in the constituency in the wake of the Partygate affair. Tuckwell attributed his victory to the unpopularity of London's Ultra Low Emission Zone scheme and its proposed expansion into the Borough of Hillingdon.^[1]

Uxbridge and South Ruislip is a constituency in West London, part of the suburban sprawl of Greater London.^[2] Suburbs in the constituency include Uxbridge, South Ruislip, Eastcote, Hillingdon and Yiewsley.

Johnson was first elected as an MP in 2001 for the seat of Henley. After leaving Parliament to focus on being Mayor of London, an office to which he was elected in 2008, he was elected as the MP for Uxbridge and South Ruislip in 2015. In 2019, he became leader of the Conservative Party and Prime Minister when he won the leadership election touched off by the resignation of Theresa May. However, he stood down as Prime Minister and party leader in July 2022 following a series of scandals and by-election defeats which culminated in the mass resignation of much of his cabinet. In the subsequent leadership election, Liz Truss succeeded Johnson as Prime Minister, only to resign herself and be succeeded in October by Rishi Sunak.

Johnson announced his pending resignation from Parliament in response to an investigation by the Commons Privileges Committee that was launched into whether he had knowingly misled Parliament in comments about Partygate. He was highly critical of the report, which recommended a suspension from Parliament that would have been long enough to trigger a recall petition that, if successful, would have forced a by-election.^[3]

His resignation took effect on 12 June. The writs for the by-election were moved, in Parliament, by Chief Whip Simon Hart on 14 June. A by-election must take place between 21 and 27 working days from the issuing of the writs; thus the by-election for Uxbridge would have had to occur between 13 and 21 July.^[4] Hillingdon Council later confirmed that the by-election would take place on 20 July.^[5]

On the same day, the Selby and Ainsty and Somerton and Frome by-elections were held.

Labour began campaigning the day after Johnson's resignation was announced, with candidate Danny Beales joined by Shadow Work and Pensions Secretary Jonathan Ashworth and Labour's campaign co-ordinator Shabana Mahmood^[6] speaking to press with assembled supporters before canvassing.^[7] On 10 June, Sir Ed Davey, the leader of the Liberal Democrats, ruled out a Lib–Lab pact,^[8] as did Mahmood on 13 June.^[9]

At a hustings on 4 July, Beales said that it was "not the right time" to expand London's Ultra Low Emission Zone (ULEZ) into Hillingdon.^[10] Beales had previously supported the policy earlier in the campaign.^[11]

Weeks before the by-election, London Mayor Sadiq Khan reversed his decision to close Uxbridge police station, in a move described by political opponents as a "cynical" attempt to influence voters. The closure of the station was long opposed by the Conservative-run council and the previous MP.^[12] The London Conservatives referred the mayor to the watchdog, Greater London Assembly's monitoring officer.^[13] Both the Conservatives and the Labour candidate claimed credit for the reversal of the closure.^[14]

One poll of the constituency was conducted in the days shortly before Boris Johnson's resignation by Lord Ashcroft Polls. The poll was criticised by a journalist in The New Statesman for sampling issues, and allegedly under-representing the young.^[15] National polls suggested Labour could win the seat, but that it would be a close race against the Conservatives.^[7] A poll by JL Partners after Johnson's resignation showed Labour in the lead, but within its margin of error.^[16]

Seventeen candidates were standing in this by-election. The full list was announced on 23 June 2023.

More information Party, Candidate ...

2023 Uxbridge and South Ruislip by-election^[17][18]

Party		Candidate	Votes	%	±%
	Conservative	Steve Tuckwell	13,965	45.2	7.4
	Labour	Danny Beales	13,470	43.6	6.0
	Green	Sarah Green	893	2.9	0.7
	Reclaim	Laurence Fox	714	2.3	New
	Liberal Democrats	Blaise Baquiche	526	1.7	4.6
	SDP	Steve Gardner	248	0.8	New
	Independent	Kingsley Hamilton Anti-Ulez[lower-alpha 2]	208	0.7	New
	Count Binface	Count Binface	190	0.6	0.5
	Independent	No-Ulez Leo Phaure[lower-alpha 2]	186	0.6	New
	Rejoin EU	Richard Hewison	105	0.3	New
	Let London Live	Piers Corbyn	101	0.3	New
	Independent	Cameron Bell	91	0.3	New
	CPA	Enomfon Ntefon	78	0.3	New
	UKIP	Rebecca Jane	61	0.2	0.4
	Climate	Ed Gemmell	49	0.2	New
	Monster Raving Loony	Howling Laud Hope	32	0.1	0.2
	Independent	77 Joseph[lower-alpha 3]	8	0.0	New
Majority			495	1.6	13.4
Turnout			30,925	46.1	22.4
Rejected ballots			77
Registered electors			67,067
	Conservative hold		Swing	6.7

Close

Against expectations, Labour failed to take the seat, despite winning the Selby and Ainsty by-election on the same day with a much larger swing. Many interpreted the result as being about opposition to the ULEZ expansion.^[22][23][24] Much of Steve Tuckwell's campaign literature did not mention Boris Johnson at all, while barely mentioning either the Conservative Party or Rishi Sunak.^[25] Both Labour's leader, Keir Starmer, and deputy leader, Angela Rayner, blamed opposition to ULEZ, with Starmer suggesting the Labour London Mayor Sadiq Khan should rethink the policy.^[26][27] Khan defended the policy^[28] and Starmer soon sought to heal the rift.^[29] The defeated Labour candidate, Beales, also criticised the ULEZ policy.^[30] openDemocracy noted that despite strong negative feeling towards high-ranking politicians like Sunak, Starmer, and Khan, Tuckwell won more than half as many votes as Johnson had won in 2019.^[25]

The elected chair of Uxbridge and South Ruislip Constituency Labour Party resigned his position and left the party on the day after the election, praising former leader Jeremy Corbyn.^[31]