The Evening Standard reports: Activists are being urged to set up camp in the Square Mile in an effort to stage a repeat of the recent anti-Wall Street protests in New York.
Hundreds of riot police are being deployed in case of trouble and key buildings, including the Stock Exchange, will be ringed by officers to prevent attempts to occupy them.
The Met and City of London police forces have launched a joint operation in an effort to ensure the protests are peaceful.
One source said: "Our aim is to minimise any disruption to Londoners and tourists who are in the area. But the groups have told us they want the protest to be peaceful so we shall see."
One campaigner said the City and Canary Wharf had become the focus of their anger after Parliament Square became too fortified to penetrate.
The protest, called Occupy London Stock Exchange, is being organised by coalition of protest and direct action groups, including UK Uncut.
The protest echoes a similar occupation carried out in Wall Street in New York which has seen demonstrators take over a park in lower Manhattan for three weeks.
The Met and City of London Police would not discuss tactics to deal with the protesters, saying only an "appropriate police plan" was in place.
A London Stock Exchange spokesman declined to comment.
After all we are dealing with a situation where government and banks have been shown to be complicit in having hidden a great deal in the past and as we have seen with false flag wars etc. this is obviously our greatest concern. Check our post on the London street festival and your right to film in a public place and we urge people to go in groups with friends and be armed with your video devices for your own protection against the authorities (and indeed to use bad behaviour by the authorities online to spur the movement).
Let us hope the police realise that there is no difference between 99.99% of us and 99.99% of them (when they soon lose their jobs due to austerity measures). We will be there as true patriots for Britain. Why will they be there?
We say, best libertarian behaviour please. Peace, Love, let's jail some banksters and get a dept amnesty on essentials for the 99.99% including our good police. Now that would be a loot!