Leslie Ash is set to reprise her role as Vanessa Lytton in a Casualty guest appearance.
She originally played the part of the former hospital chief executive in the drama's sister show Holby City from 2009 to 2010.
The 61-year-old said: “I’m thrilled to be joining the Casualty team for this episode and stepping back into Vanessa Lytton’s shoes.
“It’s been a few years since she graced the wards of Holby City hospital and I’m excited for viewers to see what’s in store for her.”
Ash will feature in the episode of the BBC programme this summer.
The actor also told OK! Magazine she will be returning to the programme as a patient, adding it is “a great little storyline and it’s given me the chance to be back on set again”.
She went on to say that it was "lovely" to be reunited with Charlie Fairhead star Derek Thompson on the Casualty set as they'd worked together on her first TV role.
"My first TV job ever was The Gentle Touch and that was the last time we saw each other," she shared. "It was over 40 years ago! In an ordinary world we’d be hugging one another, so it was strange not to have any of that."
Watch: Holby City cast on the challenges of filming during a pandemic
Ash famously featured in Men Behaving Badly in the 1990s opposite Neil Morrissey, Martin Clunes and Caroline Quentin. She also starred in 1979 film Quadrophenia.
She's set to feature in an upcoming unofficial semi-sequel, To Be Someone along with original co-stars Phil Daniels, Gary Shail, and Toyah Willcox.
With additional reporting by PA.