Hundreds of Palestine Action supporters protested in Trafalgar Square today as the Home Secretary unveiled plans to proscribe it a terrorist organisation.Yvette Cooper announced the ban after two of the group’s members vandalised planes at an RAF base last week.

Palestine Action protesters have clashed with police in Trafalgar Square after they were banned from protesting outside Parliament. On Sunday evening the Metropolitan Police imposed an exclusion zone around Parliament, with protesters facing arrest if they enter the area.

The Metropolitan Police chief has said he is "shocked and frustrated" at a planned protest in support of Palestine Action in London on Monday. Commissioner Sir Mark Rowley said while the right to protest is essential, "actions in support of such a group go beyond what most would see as legitimate protest".