Defence and Security Media Advisory System
This voluntary system provides advice to publishers and broadcasters regarding material that Government considers could jeopardise national security or the safety of military and security service personnel. There are 5 standing notices on the Defence and Security Media Advisory website which cover Military Operations,Plans and Capabilities; Nuclear and Non-Nuclear Weapons and Equipment; Ciphers and Secure Communications; Sensitive Installations and Home Addresses; United Kingdom Security and Intelligence Services and Special Services.
Any programme maker wishing to make a film in these areas must seek legal advice.