The season four premiere of Games Of Thrones was watched by more than 6.6 million viewers on Sunday night, making it HBO's biggest ratings-winner since the last ever episode of The Sopranos in 2007.

Season four opener Two Swords had GoT's largest audience to date - which up a massive 50 per cent from the season three premiere.

It also tripled the 2.2 million who tuned in for the first-ever episode back in April 2011.

A further 1.6 million viewers also watched the repeat of the episode - making a collective audience of 8.2 million.

And US-based online streaming service HBO GO experienced multiple technical errors due to the huge demand for the show.

The show also put in a strong performance on social media with 1.9 million engaging in conversation about the show on Facebook - resulting in 2.8 million likes, posts and shares.