Hundreds of thousands of people are marching through central London today. The demontrators are protesting against government austerity measures which force the bulk of the population, and especially public sector workers, to pay for the economic crisis which erupted out of the banking sector two years ago.

Most of the demonstrators - trade unionists, families, and people against the austerity measures - will take part in the officially-sanctioned TUC demonstration. In addition, many groups have signaled their willingness to do more than march, with protest actions being called for by multiple groups. Fast-moving direct action groups are currently moving through London's West End, the high-class shopping district. They have been smashing in windows and doing sit-ins at corporate targets which have been identified as tax-dodgers or in some way responsible for the economic crisis.

Here are a selection of images from the protest... (big thanks to all photo takers!)