The use of the Police and Criminal Evidence Act to enter newsrooms and reporters homes for unlimited searches and seizures. The ban on interviews with members of the outlawed IRA or its legal political organisation, Sinn Fein, over British radio and TV. Other curbs on the BBC: The ban on the interviews with the present or former members of the security and intelligence services; the threat of prosecution under the Official Secrets Act which caused the BBC to drop plans to air the programmed, "Get By in Russian"; the injunction against a broadcast on the Irish situation, which aimed to recreate the court hearing into the 1973 Birmingham pub bombings; the banning of Duncan Campbell's documentary "The Secret Society", which prevents him from publishing any information about Zircon, the British spy satellite. The related police raids on Campbell's home, on the offices of the New Statesman and on the offices of the BBC in Scotland."
Source: "New Statesman and Society", vol. 2, Iss:38 - Feb 24, 1989