Although Maisie has brightly described her time on the show as 'the best experience' of her life, she did admit that things got a little shaky when she had to fight Ferne.
In one task from the upcoming series, Maisie was challenged to fight the former TOWIE star.
"They went, 'Go,' and I wasn’t expecting her to just go crazy. But she literally just went, 'Agh!' and just screamed," Maisie told The Sun.
"I think she shut her eyes, screamed and just went crazy. I thought, 'OK. I need to step up my game.' I was going for a solid minute with just screaming and punching, like a proper cat fight.
"I got a couple of good punches in. It wasn’t like a normal boxing ring. It was nonstop."
Despite the rough challenge, Maisie shared that she was still incredibly fond of Ferne during their time on the series together, describing her as the 'biggest personality' in the cast.
"We would be absolutely battered and past the point of exhaustion and she'd be asking about holidays and families," recalled the EastEnders star.
"She was like a little ray of sunshine that we actually needed because by that point I was scared. I couldn't even speak. She was like, 'So, tell me about your relationship.' That's what I loved about her. No matter what was happening, she was always happy. That was nice."
Meanwhile, Ferne has admitted that she was extremely competitive with her cast-mates, and couldn't help sizing them up.
"I'm quite a competitive person," she said ahead of the season's launch.
"So it's hard to find the balance to bond with them but at the same time, you want to get to the end and know that not everyone can make it to the end.
"So you're waiting to see who's going to rise to the top. You naturally size everyone up and people play their roles, like natural born leaders, and obviously you've got the males who are full of testosterone and they want to be the alpha male, and people play their part.
"But for me, I'm such a people person and my favourite moments were just sitting around in base camp getting to know them all."
We're just glad to hear there were no hard feelings after her brawl!
Celebrity SAS: Who Dares Wins returns at 9.00pm on Sunday, 4 September, on Channel 4.
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