It’s A Sin cast and how to watch Channel 4 series in full online now

It’s A Sin is the new drama from Russell T Davies which is now on Channel 4 and online.

The new five-part series charts the joy and heartbreak of four friends during a decade in which everything changed.

Penned by multi-BAFTA Award-winning writer Russell T Davies’ (Queer As Folk, A Very English Scandal, Years and Years, Doctor Who), the series was originally titled Boys.

Watch It’s A Sin on TV and online

The series started on TV on Friday, 22 January at 9PM on Channel 4. Episodes will air weekly on TV.

Alternatively, the full series has been released to watch online in full on All 4.

The series has five episodes.

A synopsis shares: “It’s 1981, the start of a new decade and Ritchie, Roscoe and Colin begin a new life in London. Strangers at first, these young gay lads, and their best friend Jill, find themselves thrown together, and soon share each other’s adventures.

“But a new virus is on the rise, and soon their lives will be tested in ways they never imagined. As the decade passes, and they grow up in the shadow of AIDS, they’re determined to live and love more fiercely than ever.”

It’s A Sin cast

Olly Alexander, from the band Years & Years, plays 18-year-old Ritchie Tozer, the family’s golden boy, though he’s determined to keep his secrets from them.

Newcomer Omari Douglas plays London-born 17-year-old Roscoe Babatunde, a wild, brittle party boy, always on the run.

Newcomer Callum Scott Howells plays Colin Morris-Jones, a quiet, unassuming, boy from Wales, about to become an apprentice on Savile Row.

Lydia West (Years and Years) plays Jill Baxter, Ritchie’s friend from college, straight-talking, funny, and the rock on which they rely.

Nathaniel Curtis plays Ash, a faithful friend through thick and thin.

The cast also includes Keeley Hawes (Honour, Bodyguard, The Durrells, Line of Duty), who plays Valerie, Ritchie’s mum, Shaun Dooley (Gentleman Jack, Broadchurch, Woman in Black) who plays Clive, his dad, Neil Patrick Harris (How I Met Your Mother, Gone Girl, A Series of Unfortunate Events) as Henry Coltrane, Stephen Fry (Wilde, Gosford Park, Bones) as MP Arthur Garrison, and Tracy Ann Oberman (Friday Night Dinner, Toast of London, After Life) as Carol Carter.

Olly Alexander said: “I feel like the luckiest boy in the world to be a part of this project, I’ve been a fan of Russell T Davies ever since I watched Queer As Folk in secret at 14 years old. His work helped shape my identity as a gay person so I’m absolutely over the moon we’ll be working together.

“The script was amazing to read, I laughed and I cried a lot, it’s a privilege to be helping to tell this story and I’m so excited.”

“Russell’s scripts chart the highs and lows of this time so beautifully and deftly, it’s an honour to help tell this story.”