Protests against the global financial system, which have seen huge demonstrations in New York's Wall Street, will spread to the city of London this weekend.
A number of campaign organisations, including direct action group UK Uncut, say they will support an occupation of the heart of the capital's financial centre on Saturday as part of a "global movement for real democracy" to highlight social and economic injustice.
The Occupy London Stock Exchange collective said a Facebook page on the protest had more than 3,500 confirmed attendees.
Laura Taylor, a supporter of the so-called OccupyLSX, said: "Why are we paying for a crisis the banks caused? More than a million people have lost their jobs and tens of thousands of homes have been repossessed, while small businesses struggle to survive.
"Yet bankers continue to make billions and pay themselves enormous bonuses, even after we bailed them out with £850bn."