Police siren – x37 London Police Protected Carrier police vans responding

999 Anit-Austerity Protests Anti-Austerity blues Dog Section emergency lights London Metropolitan Police London Police London Police Responding Mercedes Sprinter Mercedes-Benz (Automobile Make) MET Police MET Police responding Metropolitan Police Service (Government Agency) Police police dogs Police emergency Police lights Police responding Police Riot Van Police sirens Public Order Vans sirens Territorial Support Group (Organization) TSG UK Police 2016-07-26