Successful appeal against an order for disclosure of documents to the Inquest into the death of Alexander Litvinenko.
Secretary of State for Foreign and Commonwealth Affairs v Assistant Deputy Coroner for Inner North London [2013] EWHC 3724 (Admin)
A public interest immunity ruling was quashed as the defendant did not explain the reasoning which drove him to his decision and there was a real risk of damage to national security. The defendant should have reconsidered his first decision in light of his subsequent ones and assessed whether the prejudice created by non-disclosure outweighed the real risk to national security.