The first GoT sex scene featured in the pilot episode, shot on location in Northern Ireland, Scotland and Morocco. James says in his book: "Perimeters were expanded and heavily patrolled. Printed scripts were largely banished from use in the latter seasons. Every character was given a code name on any production documents. Director Mark Mylod said: "Ian McShane was a force of nature. He's gone down in Game of Thrones crew folklore as being the person who most improved the catering. James details how the Northern Ireland sets of HBO's smash sex, swords and sorcery epic were designated as no-fly zones by the UK government - while scripts were released on an encoded messaging service that deleted them after 24 hours.

He shakes my hand, and I look down and he put the… it's basically like a condom except a little bigger. Director David Nutter added he told the doubles: "This is going to be a three-day event, and you have to be prepared for the fact that it's very probable somebody will get a shot of this from the crowd and you'll be trending as the most important thing online. Its US journalist author James Hibberd spent months on the show's sets and his tome collects never-before-seen interviews with the series' best-known cast and crew.David (50) said: "It seemed like it went fine, and then afterward Jason walks up to me and goes, 'Hey, you did a great job'. Emilia said: "I was unemployed when I was cast. I was so desperate to be the most professional actor I could be that I'd be like, 'Yeah, sure', for anything they threw at me - 'I'll just cry about it in the bathroom later, whatever, you won't know'. Cast trailers had numbers on their doors rather than character names, so an interloper couldn't tell which actors were in a scene together."

LATEST | NI traffic alerts: Full list of road closures with flooding widespread and disruption to public transport verifyErrors }}{{ message }}{{ /verifyErrors }}{{ Jason added: "That was because David had been like, 'Momoa, just take it off!' You know, giving me s**t. 'Sacrifice! Do it for your art!'

Along with stopping spoilers leaking online, the show's raunchy nude scenes were another reason for the extreme secrecy. The actress quietly battled through a brain haemorrhage and two surgeries during filming, with only a select group of her GoT colleagues informed.