Over the course of their numerous collaborations, Rosamund told Radio 2 that she discovered the Oscar winner is both a “delight” and a fan of creating her own fun behind the scenes.

“The best actress I’ve ever worked with is Judi Dench, who’s such a mischief maker,” the Gone Girl star enthused. “She’s so delightful. She’s so, so good.”

Rosamund added: “She’s just amazing and yet, when you’re doing a play with her, she’s so funny, she’s so naughty. Off stage, she’s completely out of character, laughing, playing a practical joke, and then she walks on and it’s all there.”

Elsewhere in her Radio 2 interview, Rosamund claimed that her favourite male co-star was Christian Bale, even if his Method acting technique meant she didn’t really get to know him very well.

“He’s another level,” the Saltburn actor said. “I can’t say I know him really, but it was just a pretty amazing experience to be around him in a film called Hostiles.

“But I don’t think I met Christian, I think I only met the character. He’s quite method. He’s very method.”