Ayra was supposed to do more stunts

Williams explains that episode director Mark Mylod and his team wanted Arya's escape from The Waif in episode seven and subsequent chase in No One to be far more theatrical, but the actress maintained that it wasn't Ayra's style.

She said that in her mind, Ayra was really struggling, and wouldn't expend extra energy on pulling cool-looking stunts when she was just trying to stay safe:

"I wanted her to look like she was struggling. I didn’t want [the chase stunts] to be unnecessary or superhuman. I got on set and they were [going to have Arya] rolling around, and diving, and I was like, 'That looks amazing, but no.' I’d be like, 'Why would she run over there? She’d just duck under here and just get out.'"

Although Williams's post-festival stupor probably didn't help

Williams, lest we forget, is still only 19. Before shooting the dramatic scenes of No One, she had spent the weekend at "a music festival so I hadn’t slept", which sounds like perfect preparation for Arya's petrified, wide-eyed state. The actress recalls: "We wanted people to think this could be the end, or the start of the end. Like maybe her wound is going to fester – like The Hound. We did so many different takes of emerging out of the water the first time she’s stabbed and sliced. I was jumping in the Irish sea. It was a totally manic day."