There should be in respect of each gate in a perimeter fence (or group of gates if they are close together) a police officer authorised to decide whether or not to allow spectators through a gate to relieve overcrowding. The officer so authorised in respect of each gate should be identified for each match and known to be so by all stewards and police officers in that vicinity. He should be able to make radio contact with the control room either himself or via an officer close at hand.