Colman stars as Queen Elizabeth II in the third season of the hit Netflix show The Crown. She said playing a character that is "closed-off" was "the hardest thing ever." In real life, she finds it hard to keep her emotions in check.

Olivia Colman stars as Queen Elizabeth II in season three and four of The Crown.

Olivia Colman: It was "the hardest thing ever"

Apparently, Colman found it particularly difficult to remain calm while filming scenes based on the 1966 Aberfan disaster in which 144 people died, 116 of them children.

The Crown returns to Netflix this Sunday - all episodes of season three will be available on November 17.