“66. I also find it difficult to accept that costs should necessarily follow the event, as if this were private litigation. The nature of the jurisdiction is to enable a judge to permit intrusion into legitimate journalistic activity in furtherance of the public interest in the effective investigation of terrorism. Notionally, these applications involve the police on the one hand trying to investigate terrorism in the interests of public safety, and journalists carrying out their important work in the public interest ensuring that power is held to account in a free society. It is the role of the court to balance these opposed public interests and it is quite conceivable that an order may be made or refused without the losing side having done anything wrong at all. They may, on the contrary, have contributed valuably to the court’s consideration of the issues even though the interest they were seeking to protect did not prevail. Both parties to these applications will be seeking to perform duties on many occasions: the duty to investigate as against the duty to keep sources confidential. The journalist may well be duty bound and also entitled to decline to hand over material without a court order, and may also desire to ensure that an order is made only if it lawfully should be.”