TUC March for the Alternative begins
The Metropolitan Police have 4,500 officers on duty and the TUC has 1,000 stewards. Paul McKeever, chairman of the Police Federation, which represents rank and file bobbies, has pointed out that the police are facing cuts too.
"Those policing the march will be facing deeper cuts than those actually marching," he told The Economist.
Here's a brief video of some of the protesters explaining why they are on the march:
You can follow us on Twitter at the march by following @whealie or @martincloake. The hashtag to follow for wider comment is #26march.