It's A Sin: Meet the Exciting Newcomers Joining the Cast of Channel 4's Vibrant LGBTQI+ Series

Olly Alexander is best known as the frontman for band Years & Years (yep, it confusingly has the same name as Davies' series, Years and Years). While many of his credits are owed to writing or performing songs for soundtracks, Alexander's also had roles in Gulliver's Travels and Skins

Nathaniel Curtis is a newcomer who's joined the cast as Ash, one of Ritchie's closest friends.

Another newcomer, Omari Douglas, plays 17-year-old Roscoe in It's A Sin, another member of the tight-knit friendship group. According to Channel 4, Roscoe is "a wild, brittle party boy, always on the run".

Lydia West (of TV series, Years and Years) plays Jill, a funny and straight-shooting uni student and the glue that holds the friendship group together.

It's A Sin sees Callum Scott Howells debut in the role of Colin, a quiet Welsh boy who becomes an apprentice at Savile Row.

Keely Hawes has had roles in many films and TV series, including Bodyguard, Line of Duty, and Death at a Funeral. In It's A Sin, Hawes plays Ritchie's mum, Valerie.

Stephen Fry needs absolutely no introduction. The legendary actor and writer joins the cast of It's A Sin as MP Arthur Garrison.

Neil Patrick Harris famously appeared in long-running American comedy series, How I Met Your Mother and psychological thriller Gone Girl, and now he's joining the cast of It's A Sin as Henry.