No.
|
Date
|
Protest
|
Cause
|
Organisers
|
Location
|
Attendance
|
Organisers' estimate
|
Police estimate
|
Third-party estimates
|
1
|
15 February 2003
|
Stop the War
|
Iraq War
|
Stop the War Coalition (StWC)
|
London
|
1,500,000[2]
|
750,000[3]
|
"around a million"[4]
|
2
|
23 March 2019
|
Put it to the People march
|
Second EU referendum
|
People's Vote, European Movement UK, Open Britain
|
London
|
1,000,000[5]
|
|
312,000 to 400,000[6][7]
|
3
|
19 October 2019
|
Let Us Be Heard
|
Second EU referendum
|
People's Vote, European Movement UK, Open Britain
|
London
|
1,000,000[8]
|
|
105,000 to 216,000[9]
|
4
|
11 November 2023
|
PSC March for Palestine
|
Israel–Hamas war
|
Palestine Solidarity Campaign (PSC)
|
London
|
800,000[10]
|
300,000[10]
|
|
5
|
20 October 2018
|
People's Vote march
|
Second EU referendum
|
People's Vote, European Movement UK, Open Britain
|
London
|
700,000[11]
|
|
450,000[12]
|
6
|
26 March 2011
|
March for the Alternative
|
Austerity
|
Trades Union Congress (TUC)
|
London
|
500,000[13]
|
250,000 (more than)[14]
|
|
7
|
28 October 2023
|
PSC March for Palestine
|
Israel–Hamas war
|
Palestine Solidarity Campaign
|
London
|
500,000[15]
|
50,000 to 70,000[16]
|
|
8
|
13 January 2024
|
PSC March for Palestine
|
Israel–Hamas war
|
Palestine Solidarity Campaign
|
London
|
500,000 (more than)[17]
|
|
|
9
|
22 March 2003
|
Stop the War
|
Iraq War
|
Stop the War Coalition, Campaign for Nuclear Disarmament (CND)
|
London
|
500,000 (StWC), 200,000-300,000 (CND)[18]
|
200,000[18]
|
|
10
|
23 September 2002
|
Liberty & Livelihood
|
Hunting and countryside causes
|
Countryside Alliance
|
London
|
407,791[19]
|
400,000[19]
|
|
11
|
22 October 1983
|
CND march for peace
|
Nuclear weapons
|
Campaign for Nuclear Disarmament
|
London
|
400,000[20]
|
200,000[21]
|
|
12
|
24 September 2002
|
Stop the War
|
Iraq War
|
Stop the War Coalition, Muslim Association of Britain (MAB)
|
London
|
400,000[22]
|
150,000[22][23]
|
|
13
|
9 March 2024
|
PSC March for Palestine
|
Israel–Hamas war
|
Palestine Solidarity Campaign
|
London
|
400,000[24]
|
|
"tens of thousands"[25]
|
14
|
21 October 2023
|
PSC March for Palestine
|
Israel–Hamas war
|
Palestine Solidarity Campaign
|
London
|
300,000[26]
|
100,000[27]
|
|
15
|
25 November 2023
|
PSC March for Palestine
|
Israel–Hamas war
|
Palestine Solidarity Campaign
|
London
|
300,000[28]
|
45,000[29]
|
|
16
|
17 February 2024
|
PSC March for Palestine
|
Israel–Hamas war
|
Palestine Solidarity Campaign
|
London
|
250,000[30]
|
30,000[30]
|
|
17
|
24 October 1981
|
CND march for peace
|
Nuclear weapons
|
Campaign for Nuclear Disarmament
|
London
|
250,000[31]
|
|
|
18
|
2 July 2005
|
Make Poverty History
|
Raise awareness of global poverty
|
Various, coordinated by British Overseas NGOs for Development (bond)
|
Edinburgh
|
225,000[32]
|
225,000[32]
|
225,000[32]
|
19
|
13 July 2018
|
Stop Trump
|
Trump's visit to the UK
|
Various
|
London
|
250,000[33]
|
|
|
20
|
23 November 1985
|
Ulster Says No
|
Anglo-Irish Agreement
|
Democratic Unionist Party, Ulster Unionist Party
|
Belfast
|
203,000[34]
|
|
100,000[35]
|
21
|
18 November 2003
|
George W. Bush's state visit to the UK
|
George W. Bush's Foreign Policy (Bush Doctrine)
|
Stop the War Coalition, Campaign for Nuclear Disarmament,Muslim Association of Britain
|
London
|
200,000[36]
|
100,000[36]
|
|
22
|
3 February 2024
|
PSC March for Palestine
|
Israel–Hamas war
|
Palestine Solidarity Campaign
|
London
|
200,000 (CND)[37]
|
20,000[38]
|
|
23
|
30 March 2024
|
PSC March for Palestine
|
Israel–Hamas war
|
Palestine Solidarity Campaign
|
London
|
200,000 [39]
|
|
|
24
|
31 March 1990
|
1990 Poll tax protest
|
Poll tax
|
All Britain Anti-Poll Tax Federation
|
London
|
200,000[40]
|
|
|
25
|
16 May 1832
|
Meeting of the Unions
|
Suffrage
|
Birmingham Political Union
|
Birmingham
|
|
|
200,000[41][42]
|
26
|
22 May 2021
|
PSC March for Palestine
|
2021 Israel–Palestine crisis
|
Palestine Solidarity Campaign
|
London
|
180,000[43]
|
|
|
27
|
14 October 2023
|
PSC March for Palestine
|
Israel–Hamas war
|
Palestine Solidarity Campaign
|
London
|
150,000[44]
|
|
|
28
|
26 March 2022
|
UK with Ukraine
|
Russian invasion of Ukraine
|
European Movement UK, Mayor of London
|
London
|
150,000[45]
|
|
|
29
|
1 April 1961
|
Aldermaston Marches
|
Nuclear weapons
|
Campaign for Nuclear Disarmament
|
London to Berkshire
|
150,000[citation needed]
|
|
|
30
|
4 October 1936
|
Battle of Cable Street
|
Anti-fascist response to the British Union of Fascists march.
|
Various anti-fascist groups:
Communists (Communist Party of Great Britain),Socialists, Trade unionists, Anarchists, British Jews, Independent Labour Party
|
London
|
|
|
100,000[46]-310,000[47]
|
31
|
31 January 2009
|
2009 BTF protest
|
Tamil genocide Sri Lanka's genocide of Tamils
|
British Tamils Forum
|
London
|
150,000[48]
|
50,000[49]
|
|
32
|
26 November 2023
|
March Against Antisemitism
|
Rise in antisemitism
|
Campaign Against Antisemitism
|
London
|
100,000[50]
|
50,000[51]
|
|
33
|
9 December 2023
|
PSC March for Palestine
|
Israel–Hamas war
|
Palestine Solidarity Campaign
|
London
|
100,000[52]
|
40,000[53]
|
|
34
|
17 March 1968
|
Grosvenor Square peace march
|
Vietnam War
|
Vietnam Solidarity Campaign
|
London
|
100,000[54]
|
20,000[55][better source needed]
|
10,000[56]
|
35
|
18 November 2001
|
Stop the war
|
Afghanistan War
|
Stop the War Coalition
|
London
|
100,000[57]
|
15,000[57]
|
|
36
|
6 November 2021
|
COP26 Nature Day march & rally
|
Climate change
|
COP26 Coalition
|
Glasgow
|
100,000[58]
|
|
|
37
|
19 September 2019
|
September 2019 Youth Climate Strikes
|
Climate change
|
UK Student Climate Network
|
London
|
100,000[59]
|
|
|
38
|
23 June 2018
|
People's Vote March
|
Second EU referendum
|
People's Vote, European Movement UK, Open Britain
|
London
|
100,000[60]
|
|
|
39
|
18 March 2006
|
Stop British involvement in the Iraq War
|
Iraq War
|
Stop the War Coalition, Campaign for Nuclear Disarmament,Muslim Association of Britain
|
London
|
80,000-100,000[61]
|
15,000[61]
|
|
40
|
15 February 2003
|
Stop the War
|
Iraq War
|
Stop the War Coalition
|
Glasgow
|
80,000 (more than)[62]
|
30,000[62]
|
100,000[63]
|
41
|
4 June 2019
|
Stop Trump
|
Trump's State Visit to the UK
|
Stop Trump coalition
|
London
|
75,000[64]
|
|
|
42
|
28 March 1959
|
Aldermaston march
|
Nuclear weapons
|
Campaign for Nuclear Disarmament
|
London to Berkshire
|
60,000[citation needed]
|
|
|
43
|
16 August 1819
|
Gathering at Peterloo (leads to the Peterloo Massacre)
|
Reform parliamentary representation
|
Manchester Patriotic Union
|
Manchester
|
|
|
60,000[65]
|
44
|
10 November 2010
|
Fund Our Future: Stop Education Cuts
|
Education cuts
|
National Union of Students
|
London
|
52,000[66]
|
|
|
45
|
10 January 2009
|
Ceasefire in Gaza
|
Gaza War (2008–2009)
|
Stop the War Coalition, British Muslim Initiative, Palestine Solidarity Campaign
|
London
|
|
20,000[67]
|
50,000[67]
|
46
|
28 March 2009
|
March for Jobs, Justice & Climate
|
2009 G20 London summit
|
Put People First
|
London
|
35,000[68]
|
35,000[68]
|
|
47
|
28 February 2020
|
Climate Strike
|
Climate change
|
Bristol Youth Strike 4 Climate
|
Bristol
|
30,000[69]
|
15,000[69]
|
|