Game Of Thrones season 7 episode 1: Ed Sheeran cameo took on an extra significance for book readers

After months of waiting, Game of Thrones has finally returned, the premiere featuring numerous long-loved characters, along with a rather controversial appearance by a certain pop-star.

**Spoilers for season seven, episode one, ‘Dragonstone’ ahead**

Yes, Glastonbury headliner Ed Sheeran cameoed during the episode, leading to...