HC Deb 12 March 1970 vol 797 c364W
Mr. Tilney

asked the Secretary of State for the Home Department whether he will advise all chief constables to make the maximum use of deterrents to crime such as concealed television cameras.

Mr. Elystan Morgan

Chief constables are kept fully informed about new technical aids to the prevention and detection of crime. Trials with television cameras have so far been inconclusive.