The journalist's partner who was held for nine hours at Heathrow under anti-terror legislation has won permission to appeal against a High Court decision that police and security services were legally justified in detaining him and examining material he was carrying.

The Court of Appeal granted Brazilian David Miranda, the partner of journalist Glenn Greenwald, who worked on stories covering disclosures about mass surveillance made by former National Security Agency contractor Edward Snowden, permission to appeal on all five of the grounds he submitted.

The Court of Appeal noted court the exceptional and compelling nature of the case and importance of the issues.