HC Deb 25 April 1910 vol 17 c24

asked the Secretary of State for the Home Department whether he was aware that, owing to whistles practically similar to police whistles being used by residents in many parts of London for the purpose of calling cabs, the use of police whistles to summon aid was practically nullified; and if he would take steps to ensure the police force having a distinctive whistle or other form of call which, if used by citizens, should be used only for the purpose of summoning the police in cases of emergency?


It cannot be said that in practice real difficulty is experienced in obtaining a response to a police call for aid. The time, the surroundings, and other circumstances, as a rule, make such a call unmistakable. Experience has shown that there would be practical difficulties in restricting the use of any form of whistle.