Actor Alex Walkinshaw is to be discharged from Casualty in order to join sister drama Holby City.
Talking about the move, Walkinshaw - who has played nurse Adrian "Fletch" Fletcher since 2012 - explained that his character's gambling will spiral out of control and will play out in such a way that he has to leave the emergency department.
"He has to do certain other things to make up the shortfall in his wages and puts himself under pressure," the actor said. "He makes things difficult for himself and lots of other things happen. His relationship with Tess all comes back up and they have to deal with certain things about that. It has to play out and to play out, it means Fletch has to leave Casualty."
Talking to ITV's Lorraine about the career move, Walkinshaw added: "He leaves Casualty during that storyline and then I think, at a later date, potentially gets offered another job within the same hospital. But switching from Saturday nights to Tuesday nights."
Crossovers between the two medical dramas have been more common in recent weeks with former Holby cardiothoracic surgeon Connie Beauchamp (Amanda Mealing) joining Casualty and Guy Self (John Michie) also making an appearance in the ED.
Of this latest transfer, Casualty and Holby City executive producer Oliver Kent said: "We at Holby City were thinking of a new male nurse to play alongside Jonny and lock horns with Colette. When Alex suggested he might get in the lift and come upstairs to Holby City, we accepted like a shot.
"Alex as Fletch has been a wonderful asset to Casualty and I am very excited about him bringing his unique blend of warmth and blokiness to the wards."