In a statement published on journalist Glenn Greenwald's new website, The Intercept, David Miranda said:
I will appeal this ruling, and keep appealing until the end; not because I care about what the British Government calls me, but because the values of press freedom that are at stake are too important to do anything but fight until the end.
I'm of course not happy that a court has formally said that I was a legitimate terrorism suspect, but the days of the British Empire are long over, and this ruling will have no effect outside of the borders of this country.
I'm convinced they've hurt their own country far more than me with this ruling, as it emphasises what the world already knows - the UK has contempt for basic press freedoms.
I have never spoken with, worked with, or provided any journalistic materials to the Independent.
The journalists I have worked with have, at my request, been judicious and careful in ensuring that the only things disclosed are what the public should know but that does not place any person in danger.
It appears that the UK government is now seeking to create an appearance that the Guardian and Washington Post's disclosures are harmful, and they are doing so by intentionally leaking harmful information to The Independent and attributing it to others.
Guardian journalist Glenn Greenwald has told ITV News "even the most advanced intelligence services" would find it "impossible" to access information that he and his partner carry across the world because it is too well encrypted.
In his first British TV interview, Mr Greenwald refused to confirm what data his boyfriend David Miranda had confiscated by police when he was detained for nine hours at Heathrow Airport on Sunday as he headed back to Brazil.