The Submarine star appeared in Episode 2 of Series 3 earlier this year, before transferring to the eight-part online spin-off series Becoming Human. A 50-minute special of the online series aired on BBC Three the week after Being Human‘s Series 3 finale.

Roberts told SFX: “I believe I am going back for an episode. They’ve not mentioned too much about Becoming Human. If that does get mentioned again I’m all for doing it because I thought it was a great thing. I’m really happy to do Being Human again because it’s a fantastic show, and if Becoming Human wants to go again, I’m game.”

Being Human was recommissioned for another eight 60-minute episodes in March.

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