Anne-Marie Duff said that she laughed a lot while shooting Suffragette with Carey Mulligan, saying she's "hugely funny".
Speaking to TEN, Duff said that they balanced the heavy scenes with joking around, saying: "We got on incredibly well and we had a great old time together actually. I just remembering laughing an awful lot because she's hugely funny, not everybody realises this but Carey's a very funny woman.
"And the two of us looked awful every day! Covered in grime and our costumes were falling apart, so you know there was no vanity, the vanity bus didn't come to the station so we just had fun."
The actress also spoke about how her character Violet, an outspoken suffragette, jumped out of the pages at her when she read the script, saying: "She was so unlike any of the others. She's so lively. To find a woman like that in a period drama, it's great fun."
On the similarities between her and her character, Duff said: "I really understood and got the storyline, that kind of evolved in a way we weren't expecting, of her being a working mum, of her still having to find time for the cause. She was just so exhausted.
"I improvised when I said in the film 'I'm just so tired, Maud', I just said it in the moment. That was something that surprises because it felt like it had a real modern connection with the way a lot of women feel today, feeling completely stretched and trying to be all things to all people."
Suffragette is out in cinemas on October 12.
