Keith Allen is officially joining the cast of EastEnders for a special episode.

The Trainspotting and Robin Hood actor will make a special guest appearance on the BBC soap for an episode focusing on Phil Mitchell’s mental health recovery.

Phil was taken to a mental health unit after attempting to take his life during the 40th anniversary episodes. In the upcoming instalment, Phil will befriend fellow patient Gaz (played by Allen) who will help him open up and begin his road to recovery.

“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?” Allen joked.

“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,” he added of the role. “I may be a resting actor but I now rest in peace.”

The special episode will be set across four weeks, seeing Phil begin treatment to address his inner trauma and understand his depression and symptoms of psychosis.

Allen’s Gaz will bond with Phil, helping him to engage in therapy and group activities after initially being reluctant.

The BBC soap has worked with several charities including The Samaritans, Rethink Mental Illness, the Campaign Against Living Miserably (CALM), and Mind to ensure Phil’s story is portrayed accurately and sensitively.

“I’m delighted to welcome the incredibly talented Keith Allen to the cast of EastEnders as he takes on the guest role of Gaz in a special episode focusing on Phil’s mental health,” said Chris Clenshaw, Executive Producer on EastEnders.

“Keith and Steve’s performances are both phenomenal, and thoughtfully and sensitively portray the complex realities of mental health recovery and the impact of hypermasculinity.”