National approaches to the public disclosure of sensitive national security information are rooted in national culture and law. The UK has tended to prefer voluntary agreements over mandatory arrangements. The DSMA-Notice System has been reviewed several times but the principle of a voluntary system, based on mutually agreed guidelines, is still seen as appropriate by both the Media and the Government. The system does not guarantee that sensitive national security information will be protected but it plays a valuable part in alerting the media to the consequences of disclosing certain types of information; whilst leaving editors to judge whether to publish or broadcast. These are judgements which, in a wider context, the Media are used to making.