Coronation Street fans are just realising where they've seen Roy Cropper's cellmate Roscoe on TV before

Coronation Street fans spotted a familiar face in the cast when actor Warren Donnelly joined as Roy Cropper’s new callmate, Roscoe.

But his appearance left many scratching their heads and trying to figure out where they know him from, with one puzzled fan writing: "Trying to remember where I've seen the bald guy before."

Warren is well-known for his role as police officer Stan Waterman in the Channel 4 comedy drama Shameless.

Roscoe’s first episode aired on Wednesday 22 May with him seemingly befriending Roy. He entered Roy’s cell, which initially scared poor Roy. But Roscoe later returned and explained he is an old friend of Stu Carpenter (Bill Fellows).

Roscoe befriends Roy when he vists him in his cell
Warren Donnelly is playing Roscoe as a guest star -Credit:ITV/Danielle Baguley

Warren is no stranger to Coronation Street having had a cameo in 2014. He played a taxi driver, Ralph Davison who got angry with Eileen Grimshaw (Sue Cleaver) after Steve McDonald (Simon Gregson) refused to pay the Streetcars staff.

As Warren’s episode aired, fans were puzzled where they had seen him before. But one pointed out: “Shameless, he was in an episode of life on Mars too”.

Sharing a snap of Warren, his agency wrote alongside it: “Our Warren Donnelly has been busy filming @itvcorrie.”

Warren is also a star of the stage and has appeared in lots of pantomimes along with soap actors such as Emmerdale’s Sammy Winward and Coronation Street's Claire Sweeney.

Warren starred in a production of Cinderella with Sammy Winward
Warren is most well-known for his role in Shameless

Roscoe seemed to be trying to befriend Roy in recent scenes, he gifted him with a copy of his favourite book.

However, Roscoe might not be as nice as he makes out as it’s revealed in next week’s storylines Roscoe is working with Griff Reynolds (Michael Condron) and lures Roy to the prison library. Griff then holds Roy at knifepoint demanding to know what he did to Lauren.

The terrifying pictures see Roy holding onto Griff’s arm as he holds a knife to his neck.

A new teaser from Coronation Street revealed that the case of missing teenager Lauren Bolton will come to a close as the killer will be exposed. Roy has been put behind bars for her murder, but is adamant he’s innocent.

The ITV soap will drop five episodes rather than the usual three on the week beginning Monday 27 May.

The first four episodes see different characters reliving the same day revealing new details each time before the finale on Friday 31 May where the truth is revealed.

Coronation Street has given a glimpse of the mystery character who is thought to have killed Lauren Bolton
Warren has been in Corrie before and often performs on stage too -Credit:Carla Speight/Getty

Executive Producer of Coronation Street Iain MacLeod said: “This week is so gripping and unlike anything Coronation Street has done before, in terms of the story-telling. It’s modern, really exciting and has some of our favourite characters right in the middle of the drama."

Iain continued: “The murder mystery around Lauren has had us all on the edge of our seats and the race against time across this week to solve it before Roy gets seriously hurt is so engrossing and cleverly plotted. It is also the launchpad for a massive new chapter in that narrative - so you really won’t want to miss it, if you want to carry on trying to piece together this thrilling puzzle!”