Brentford and Isleworth - UK Parliament Constituency

Here are the most recent election results for the Brentford and Isleworth constituency.

Note: Smaller parties may be omitted. The candidate with the largest vote who does not belong to one of the main parties is listed as 'Minor'. Votes listed for 'Other' are calculated by taking the votes from the main parties and 'Minor' away from the total votes cast.

Name	Brentford and Isleworth
Region	London
1st in 2024		Labour
2nd in 2024		Conservative
Swing To Lose	10.85%
Next Election Prediction	View

Note: 'Swing To Lose' is the swing needed by the 2nd placed party against the 1st placed party to win the seat.

Electoral History

Election		Party
	Election 2024	Labour
	Election 2019 (New Boundaries)	Labour
	Election 2019	Labour
	Election 2017	Labour
	Election 2015	Labour
	Election 2010	Conservative
	Election 2005 (New Boundaries)	Labour
	Election 2005	Labour
	Election 2001	Labour
	Election 1997	Labour
	Election 1992	Conservative
	Election 1987	Conservative
	Election 1983	Conservative
	Election 1979	Conservative
	Election 1974 (October)	Conservative
	Election 1974 (February)	Conservative

Election 2024

View full Election 2024 results.

Party		Votes	Percentage	Change
	Labour	20,007	44.21%	-6.12%
	Conservative	10,183	22.50%	-5.80%
	Green	4,029	8.90%	+5.92%
	Reform UK	3,940	8.71%	+6.65%
	Liberal Democrat	3,863	8.54%	-7.79%
	Workers Party	2,746	6.07%	N/A
	Minor	486	1.07%	N/A
Majority		9,824	21.71%
Turnout		45,254	57.08%	-10.52%
Electorate		79,283
Swing from LAB to CON			0.16%
Swing from LAB to GRN			6.02%
Swing from CON to GRN			5.86%
	Labour hold

Election 2019 (New Boundaries)

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Party		Votes	Percentage	Change
	Labour	25,978	50.33%	+0.15%
	Conservative	14,609	28.30%	-3.85%
	Liberal Democrat	8,425	16.32%	+3.78%
	Green	1,540	2.98%	-0.15%
	Reform UK	1,063	2.06%	N/A
Majority		11,369	22.03%
Turnout		51,615	67.60%	-0.40%
Electorate		76,354
Swing from CON to LAB			2.00%
Swing from LAB to LD			1.81%
Swing from CON to LD			3.81%
	Labour hold

Election 2019

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Party		Votes	Percentage	Change
	Labour	29,266	50.18%	-7.21%
	Conservative	18,752	32.15%	-5.47%
	Liberal Democrat	7,314	12.54%	+7.54%
	Green	1,829	3.14%	N/A
	Brexit Party	1,165	2.00%	N/A
Majority		10,514	18.03%
Turnout		58,326	68.00%	-4.37%
Electorate		85,775
Swing from LAB to CON			0.87%
Swing from LAB to LD			7.37%
Swing from CON to LD			6.50%
	Labour hold

Election 2017

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Party		Votes	Percentage	Change
	Labour	35,364	57.38%	+13.63%
	Conservative	23,182	37.62%	-5.33%
	Liberal Democrat	3,083	5.00%	+0.98%
Majority		12,182	19.77%
Turnout		61,629	72.37%	+4.57%
Electorate		85,164
Swing from CON to LAB			9.48%
Swing from LD to LAB			6.32%
Swing from CON to LD			3.16%
	Labour hold

Election 2015

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Party		Votes	Percentage	Change
	Labour	25,096	43.76%	+10.16%
	Conservative	24,631	42.94%	+5.70%
	UKIP	3,203	5.58%	+3.98%
	Liberal Democrat	2,305	4.02%	-19.64%
	Green	2,120	3.70%	+2.23%
Majority		465	0.81%
Turnout		57,355	67.79%	+3.44%
Electorate		84,602
Swing from CON to LAB			2.23%
Swing from UKIP to LAB			3.09%
Swing from UKIP to CON			0.86%
	Labour gain from Conservative

Election 2010

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Party		Votes	Percentage	Change
	Conservative	20,022	37.24%	+6.40%
	Labour	18,064	33.60%	-5.03%
	Liberal Democrat	12,718	23.65%	+0.62%
	UKIP	863	1.61%	N/A
	Green	787	1.46%	N/A
	Minor	704	1.31%	N/A
	English Democrat	230	0.43%	N/A
	Others	377	0.70%	N/A
Majority		1,958	3.64%
Turnout		53,765	64.35%	+9.80%
Electorate		83,546
Swing from LAB to CON			5.72%
Swing from LD to CON			2.89%
Swing from LAB to LD			2.83%
	Conservative gain from Labour

Election 2005 (New Boundaries)

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Party		Votes	Percentage	Change
	Labour	16,764	38.63%	-1.20%
	Conservative	13,381	30.84%	+0.59%
	Liberal Democrat	9,995	23.03%	+0.26%
	Others	3,255	7.50%	N/A
Majority		3,383	7.80%
Turnout		43,395	54.55%	+2.40%
Electorate		79,549
Swing from LAB to CON			0.89%
Swing from LAB to LD			0.73%
Swing from LD to CON			0.16%
	Labour hold

Election 2005

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Party		Votes	Percentage	Change
	Labour	18,329	39.83%	-12.46%
	Conservative	13,918	30.25%	+1.14%
	Liberal Democrat	10,477	22.77%	+9.30%
	Green	1,652	3.59%	+0.62%
	Minor	1,118	2.43%	N/A
	Others	523	1.14%	N/A
Majority		4,411	9.59%
Turnout		46,017	52.15%	-0.81%
Electorate		88,236
Swing from LAB to CON			6.80%
Swing from LAB to LD			10.88%
Swing from CON to LD			4.08%
	Labour hold

Election 2001

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Party		Votes	Percentage	Change
	Labour	23,275	52.29%	-5.16%
	Conservative	12,957	29.11%	-2.65%
	Liberal Democrat	5,994	13.47%	+5.25%
	Green	1,324	2.97%	+1.75%
	UKIP	412	0.93%	-0.17%
	Minor	408	0.92%	N/A
	Others	144	0.32%	N/A
Majority		10,318	23.18%
Turnout		44,514	52.96%	-18.04%
Electorate		84,049
Swing from LAB to CON			1.26%
Swing from LAB to LD			5.20%
Swing from CON to LD			3.95%
	Labour hold

Election 1997

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Party		Votes	Percentage	Change
	Labour	32,249	57.45%	+15.50%
	Conservative	17,825	31.75%	-14.06%
	Liberal Democrat	4,613	8.22%	-2.30%
	Green	687	1.22%	-0.49%
	UKIP	614	1.09%	N/A
	Minor	147	0.26%	N/A
Majority		14,424	25.70%
Turnout		56,135	71.00%	-3.83%
Electorate		79,058
Swing from CON to LAB			14.78%
Swing from LD to LAB			8.90%
Swing from CON to LD			5.88%
	Labour gain from Conservative

Election 1992

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Party		Votes	Percentage	Change
	Conservative	24,752	45.81%	-1.89%
	Labour	22,666	41.95%	+8.71%
	Liberal Democrat	5,683	10.52%	N/A
	Green	927	1.72%	+0.17%
Majority		2,086	3.86%
Turnout		54,028	74.84%	-1.83%
Electorate		72,193
Swing from CON to LAB			5.30%
Swing from CON to LD			6.21%
Swing from LAB to LD			0.90%
	Conservative hold

Election 1987

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Party		Votes	Percentage	Change
	Conservative	26,230	47.71%	+0.28%
	Labour	18,277	33.24%	+3.97%
	SDP-Liberal Alliance	9,626	17.51%	-4.62%
	Green	849	1.54%	N/A
Majority		7,953	14.46%
Turnout		54,982	76.67%	+1.94%
Electorate		71,715
Swing from CON to LAB			1.85%
Swing from ALL to CON			2.45%
Swing from ALL to LAB			4.30%
	Conservative hold

Election 1983

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Party		Votes	Percentage	Change
	Conservative	24,515	47.43%	-1.98%
	Labour	15,128	29.27%	-11.17%
	SDP-Liberal Alliance	11,438	22.13%	N/A
	Minor	427	0.83%	N/A
	Others	179	0.35%	N/A
Majority		9,387	18.16%
Turnout		51,687	74.72%	-3.38%
Electorate		69,170
Swing from LAB to CON			4.60%
Swing from CON to ALL			12.05%
Swing from LAB to ALL			16.65%
	Conservative hold

Election 1979

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Party		Votes	Percentage	Change
	Conservative	27,527	49.41%	+6.25%
	Labour	22,533	40.44%	-2.27%
	Liberal	4,208	7.55%	-3.98%
	Others	1,449	2.60%	N/A
Majority		4,994	8.96%
Turnout		55,717	78.10%	+4.77%
Electorate		71,337
Swing from LAB to CON			4.26%
Swing from LIB to CON			5.11%
Swing from LIB to LAB			0.86%
	Conservative hold

Election 1974 (October)

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Party		Votes	Percentage	Change
	Conservative	22,527	43.15%	+2.56%
	Labour	22,295	42.71%	+3.41%
	Liberal	6,019	11.53%	-5.47%
	Others	1,362	2.61%	N/A
Majority		232	0.44%
Turnout		52,203	73.33%	-5.69%
Electorate		71,186
Swing from CON to LAB			0.43%
Swing from LIB to CON			4.01%
Swing from LIB to LAB			4.44%
	Conservative hold

Election 1974 (February)

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Party		Votes	Percentage	Change
	Conservative	22,690	40.59%	N/A
	Labour	21,964	39.29%	N/A
	Liberal	9,502	17.00%	N/A
	Others	1,741	3.11%	N/A
Majority		726	1.30%
Turnout		55,897	79.02%	N/A
Electorate		70,735

	Conservative win

2029 General Election

Poll of Polls

Seat-By-Seat Forecast

Custom Swingometer 2029

LAB - Targets | Defence

CON - Targets | Defence

LD - Targets | Defence

REF - Targets | Defence

GRN - Targets | Defence

2024 General Election Results