Protesters will call for Government overthrow

service for victims, Mr Khan said the fire was a national disaster requiring a national response.

The tragic events of last week, in which at least 58 died and hundreds more were left homeless, have become increasingly political in recent days.

Mr Corbyn insisted he was not seeking to score points against Mrs May, who has faced intense criticism for her response to the tragedy. He said: “The real issue is not about what we as individuals feel, Theresa May, me, anybody else, it’s what those people are going through.”

Mr Corbyn said if emergency accommodation could be found for stranded airline passengers, then the victims of Grenfell Tower should get similar support. “Somehow or other, it seems to be beyond the wit of the public services to deal with the crisis facing a relatively small number of people in a country of 65million,” he said.

Fears are mounting that Mr Corbyn’s supporters will seek to exploit the disaster to heap pressure on the Prime Minister. Militant groups taking part in Wednesday’s Day of Rage claim the Government’s austerity policies led directly to the tragedy.

The march has been organised by the Movement for Justice by Any Means Necessary, which was formed in 1995 by Marxist groups. In online adverts, shared on social media, campaigners urge protesters to “walk out of school, take the day off, call in sick, strike”.

The group’s Facebook page calls on supporters to: “Shut Down London – Bring Down the Government.”

The calls for mass dissent come just days after Leftwing protesters stormed Kensington Town Hall to demand action for those affected by Grenfell.

Some residents have expressed concern that the increasingly political element to the protests could damage support for those who lost everything in the fire.