The Put It to the People March is one of the biggest protests of this century.
At the last march for a Final Say, 670,000 people marched through London to parliament, according to organisers.
The march follows a petition to revoke Article 50 and remain in the EU this week, which has received more than 4 million signatures.
Meanwhile, the Independent’s Final Say petition has attracted more than 1.2 million signatures, meanwhile, an estimated 1 million protestors are said to be on the streets of Central London asking for a Final Say.
Needless to say, people are pretty astonished at that figure.
Here are some of the other biggest protests in recent history:
Stop the War March – 15 February 2003
Organisers put the number of protesters who opposed the Iraq War as close to two million people.
Police estimated it was much lower, at around 750,000 people, which still made the largest demonstration in the UK at the time.
CND March for Peace – 22 October 1983
The Campaign for Nuclear Disarmament had its biggest protest against nuclear weapons in London with an estimated 400,000 people, according to organisers, or 200,000 people, according to police.
Poll Tax – 31 March 1990
Organisers claimed 200,000 people protested against Margaret Thatcher’s “Poll Tax” policy, which was replaced by John Major after widespread unrest.
March for the Alternative – 26 March 2011
Between 250,000 – 500,000 marched against austerity and the government’s plans for spending cuts.
It was the largest union-organised rally in London since World War II.
Liberty & Livelihood – 22 September 2002
Around 400,000 people joined the Countryside Alliance’s march against the fox hunting ban.
Organisers claimed it was the largest demonstration in Britain since the 19 century at the time.