Set across four weeks, the episode will focus on Phil’s journey in the mental health unit from the moment he starts treatment, as his character prepares to face his inner trauma and understand what may have contributed to his depression diagnosis and his symptoms of psychosis.

Having attempted to end his own life on the 40th anniversary when his mental health reached a crisis point, Phil is initially reluctant to open up in therapy and group activities, but he soon befriends another patient called Gaz after the pair bond over their shared life experience.

Keith Allen, star of the small and silver screen will take on the role of Gaz, and is known for a variety of roles, with highlights including Trainspotting (1996), The Others (2001) and more recently, The Buckingham Murders (2023).

Speaking on his guest role, Keith Allen said: “I’ve written a number one hit single, I’ve presented Top of the Pops, I’ve played the lead in the West End and I was at Craven Cottage when we beat Juventus 4-1…Could it get better than that? Well, yes, I’ve just guested in an episode of EastEnders…What a joy! And what an honour to be a part of Steve McFadden’s incredibly moving story line. I may be a resting actor but I now rest in peace.”