London Conservative MP Greg Hands said ahead of the march:
"This march is being organised by the TUC with Ed Miliband as the star speaker. Having decided to bring thousands of their supporters onto the streets, Mr Miliband and Brendan Barber have a duty to ensure that their march does not become a focus for disorder and law-breaking.
"Ed Miliband should use his influence with the unions to ensure that the march tomorrow is not taken over by extremist groups. There must be no repeat of the violence we witnessed at several student marches last year."