About one million people staged a protest through London demanding a second referendum on Brexit according to its organisers.
The demonstration calling for a Final Say on the crisis is believed to be one of the biggest marches in British history.
Demonstrators marched from Park Lane to Parliament Square, as MPs attended a spacial Saturday sitting of the Commons.
A spokesperson for People’s Vote UK tweeted, “The #PeoplesVoteMarch has today become one of the biggest public protests in British history.”
A number of celebrities have also joined the march, including the actors Patrick Stewart and Stephen McGann.
The march is the fourth major People’s Vote march since the 2016 referendum and is backed by The Independent’s Final Say campaign.