Milly Zero has "learned so much" working with Adam Woodyatt and Letitia Dean.
Milly Zero
The 'EastEnders' actress - who took over the role of Dotty Cotton last year - has enjoyed sharing scenes with the Albert Square stalwarts while her character blackmails Ian Beale over the role he played in the death of Sharon Mitchell's son Dennis Rickman (Bleu Landau).
Milly told Digital Spy: "At first I was nervous but, because they've been there so long, they are so chilled about it so that makes you chilled about it.
"We have such a laugh on set, and because they are so professional, they can be laughing up to the last minute and then just switch on this amazing acting performance.
"I've learned so much working with them and it's an honour really. It's really stepped it up a gear."
Earlier this year, Ian locked Dennis in a lower deck room before the boat disaster, and Dotty has threatened him after learning the truth.
Discussing her soap alter-ego's plan, Milly added: "She is willing to go all the way. She is definitely prepared to tell Sharon but she wants Ian to feel the burn first.
"If she told Sharon now, it would ruin it. She's going to make him squirm over the next few months by getting closer to Sharon and being right there in front of his face all the time.
"She's not going to stop as he's not stopping either. He even gets a memorial bench for Dennis - councillor Beale, Saint of Walford. That is what she can't stand. She's willing to really push him on this one."
Tagged in Adam Woodyatt Letitia Dean