A new television historical drama series described as being like "Game of Thrones with Romans" will air in Britain and America in 2017.
The series, entitled "Britannia," is the first co-production between Sky and Amazon.
Written by the multi-award-winning Jez Butterworth (Jerusalem, Spectre), the series stars Kelly Reilly (True Detective, Sherlock Holmes), David Morrissey (The Walking Dead, The Hollow Crown), Zoë Wanamaker (Harry Potter and the Philosopher’s Stone, My Family) and Stanley Weber (Outlander).
"The 10-part drama is set in 43 AD as the Roman Imperial Army ... determined and terrified in equal measure ... returns to crush the Celtic heart of Britannia ... a mysterious land ruled by wild warrior women and powerful druids who can channel the powerful forces of the underworld," the producers said in announcing the series.
Britannia is shooting on location in Prague and Wales and will air on Sky 1 in the UK and Ireland and be available on Amazon Prime Video in the US in 2017.
Commenting on the show, Butterworth said: "Besides being hard, hard warriors, the Celts have a belief system which makes them almost invincible. It's a deep, heavy magic. Last time the Romans tried to invade, the mighty Julius Caesar took one look, turned round and went straight home. Now, almost a century later, the Romans are back."
He added, "I'm fascinated in what happens when gods die. When an entire, ancient faith stalls, topples, collapses ... and a whole new one grows in its place. New names, new faces, to suit the new times."
It could well be called the war of the gods, he added.
"Here we have a war between two pantheons ... the Roman gods vs. the Celtic gods. It's the Heavyweight Clash of All Time, the one which most shapes who we are today. And we see it all from a human perspective, of individual survival, ambition, courage, lust, loss, revenge. All the stuff the gods have always loved us humans for the most!"