The telly star, 46, joined the BBC One soap in 2015 to play Max Branning’s love interest Karin Smart and starred in four episodes.
Denise has now opened up about her time on the show, and admitted her colleagues were constantly “moaning” and “whinging”.
In an interview with The Sun, she explained: “Everyone I met on EastEnders would just moan about it, just whinging about everything.
“The day I arrived, and I’m quite a bubbly person, I was like ‘hi!’ and they were like ‘oh, you’re going to hate this’. I was like, ‘oh really?’
“I don’t know what’s it’s like now but when I was on I found it very intense. But I think it was quite public knowledge there was a lot of tension on set…”
However, Denise puts the on set tensions down to the incredible work the actors do and their gruelling hours.
She went on: “I don’t want to disrespect any of the actors from EastEnders because they do an amazing job, but I think perhaps, there’s a lot they have to get through.
“They’re very focussed and I just thought I would have more fun.”
Denise is best known as a telly presenter, but she’s done a lot of acting over the course of her career.
She appeared in 2000 film Love, Honour and Obey with Jude Law and Jonny Lee Miller, as well as Run for Your Wife with Danny Dyer.
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Her TV credits include a run in another soap – Neighbours – from 2019 until 2020, and Hotel Babylon.
Denise returned to TV this year for a stint on Dancing on Ice, but her run was cut short after she suffered a dislocated shoulder during training which forced her to quit the show early.
The Mirror has contacted a representative for EastEnders for comment.