An election to the Assembly of London took place on 10 June 2004, along with the 2004 London mayoral election.

Quick Facts 25 London Assembly Seats 13 seats needed for majority, First party ...

2004 London Assembly election

← 2000 10 June 2004 2008 →
25 London Assembly Seats 13 seats needed for majority
First party Second party   Leader Bob Neill[1] Toby Harris[2] Party Conservative Labour Leader's seat Bexley and Bromley Brent and Harrow (lost) Last election 9 seats 9 seats Seats won 9 7 Seat change 2 Constituency Vote 562,047 444,808  % and swing 31.2% 0.2% 24.7% 6.9% Regional Vote 533,696 468,247  % and swing 28.5% 0.5% 25.0% 5.3%   Third party Fourth party   Leader Graham Tope[3] Darren Johnson Party Liberal Democrats Green Leader's seat Londonwide Londonwide Last election 4 seats 3 seats Seats won 5 2 Seat change 1 1 Constituency Vote 332,237 138,242  % and swing 18.4% 0.5% 7.7% 2.6% Regional Vote 316,218 160,445  % and swing 16.9% 2.1% 8.6% 2.5%   Fifth party   Leader Damian Hockney Party UKIP Leader's seat Londonwide[4] Last election 0 seats Seats won 2 Seat change 2 Constituency Vote 180,516  % and swing 10.0% 9.9% Regional Vote 156,780  % and swing 8.4% 6.3%
Vote plurality Margins of victory

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The Assembly is elected by the Additional Member System. There are fourteen directly elected constituencies, nine of which were won by the Conservatives and five by the Labour Party. An additional eleven members were allocated by a London wide top-up vote, with the proviso that parties must win at least 5% of the vote to qualify for list seats. This latter rule prevented both the British National Party and the Respect Party from winning a seat each as both fell just short of the 5% threshold.

This election saw losses for Labour and the Greens and gains for both the Liberal Democrats and UKIP, who achieved their first representation in the Assembly since its creation in 2000.

More information Parties, Additional member system ...

London Assembly election, 2004

Parties		Additional member system										Total seats
		Constituency					Region
		Votes	%	+/−	Seats	+/−	Votes	%	+/−	Seats	+/−	Total	+/−	%
	Conservative	562,047	31.2	2.0	9	1	533,696	28.5	0.5	0	1	9		36.0
	Labour	444,808	24.7	6.9	5	1	468,247	25.0	5.3	2	1	7	2	28.0
	Liberal Democrats	332,237	18.4	0.5	0		316,218	16.9	2.1	5	1	5	1	20.0
	Green	138,242	7.7	2.5	0		160,445	8.6	2.5	2	1	2	1	8.0
	UKIP	180,516	10.0	9.9	0		156,780	8.4	6.3	2	2	2	2	8.0
	BNP	-	-	-	-	-	90,365	4.8	1.9	0		0		-
	Respect	82,301	4.6	New	0		87,533	4.7	New	0		0		-
	CPA	43,322	2.4	N/A	0		54,914	2.9	0.4	0		0		-
	Alliance for Diversity in Community, Uppal	-	-	-	-	-	4,968	0.3	New	0		0		-
	Communist	1,378	0.1	N/A	0		-	-	-	-	-	0		-
	Rathy Alagaratnam	1,240	0.1	New	0		-	-	-	-	-	0		-
	Others	16,446	0.9	4.8	0		-	-	-	-	-	0		-
	Total	1,802,537			14		1,873,166			11		25

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The Conservative Party gained Brent and Harrow from Labour (who lost 7.6% of their vote), however they lost it again in the 2008 election. There were also large swings away from Labour in Barnet and Camden, City and East, Ealing and Hillingdon, Greenwich and Lewisham, Havering and Redbridge and West Central. The Liberal Democrats lost votes in most constituencies, but made gains in Enfield and Haringey, Lambeth and Southwark and Merton and Wandsworth. UKIP gained large percentages of the vote in Bexley and Bromley, Croydon and Sutton, Greenwich and Lewisham and Havering and Redbridge.

• Overall turnout: 36.97%