HC Deb 12 February 1980 vol 978 c532W
Mr. Cryer

asked the Secretary of State for the Home Department whether the methods used in electronic surveillance are covered by the procedures authorising telephone tapping.

Mr. Whitelaw

I have already made clear that the procedures for the interception of communications are conducted on the basis of the recommendations contained in the report of the Birkett committee (Cmnd. 283).