Hundreds of thousands of people were urged to take to the streets of London tomorrow to demand another public say to “stop the Brexit madness”.
Senior MPs, peers and celebrities joined forces to encourage people to march for a “People’s Vote”.
With the country plunged into a national crisis, former Cabinet minister Justine Greening said: “Britain needs to find a way out of Theresa May’s Brexit shambles.
“Thats why I’ll be on the People’s Vote march to stop the madness.”
Former Deputy Prime Minister Lord Heseltine added: “The march will give voice to the growing concern in the nation that Brexit is going horribly wrong.”
After the EU last night offered Mrs May a delay to Brexit to avoid “no deal” mayhem, former Prime Minister Tony Blair stressed: “We remain in peril. But there is now a means of rescue.”
Writing in the Standard, he added that MPs must stop “chasing the Holy Grail Brexit” as it “will never be found” and Parliament had to decide on a “genuine” option, and possibly then “put the final say with the people”.
A huge police operation will be launched tomorrow to ensure the safety of the marchers who are due to assemble on Park Lane around midday, before setting off at 12.30pm.
The route will take hundreds of thousands of people down Piccadilly and St. James’s Street, through Trafalgar Square and along Whitehall to Parliament Square where a rally is expected to begin at 2.30pm and end just before 4pm.
London Mayor Sadiq Khan said: “Enough is enough. It’s time to take this out of the hands of politicians and put it back to the people.”
The number of marchers could soar towards one million given that estimates for the previous rally in October were as high as 700,000.
Match of the Day presenter Gary Lineker, TV cook Delia Smith and writer and director Armando Iannucci are urging people to take part.
Labour leader Jeremy Corbyn has dragged his feet over a second referendum but at least six shadow ministers were due to join tomorrow’s march, including shadow sports minister and Tooting MP Rosena Allin-Khan, shadow minister for disabled people and Battersea MP Marsha De Cordova, Steve Reed, shadow minister for civil society and Croydon North MP, as well as shadow Treasury minister Clive Lewis, shadow transport minister Rachel Maskell and shadow fisheries minister Luke Pollard.
Ms Allin-Khan said: “With the Government in free fall, it is now more important than ever to take the deal back to the people.”
Mr Reed said: “The country is facing a political crisis unparalleled in peacetime.”
Ms De Cordova said: “A final say is now the demand of a huge and growing mass movement.”