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Britannia season 3: release date, cast, trailer for Sky Atlantic series

Sophie Okonedo joins the cast for season three of Britannia.

Published: Wednesday, 25th August 2021 at 4:09 pm

We may have had to wait a while for series three of Britannia with series two bowing out in January 2020, but the new run is finally underway after its premier on 24th August 2021.


And thanks to the whole series being uploaded to NOW at once, fans can watch the whole thing in one quite lengthy sitting if they so wish – the Britannia drought is well and truly over!

A 40-second teaser trailer was posted on the show's social media channels on 20th August 2021, just four days before the start of the new series, and it teased the epic action in store for the Britannia cast.

Thankfully, the first episode delivered, filling the fantasy-shaped whole in our lives, after Britannia and other sword and sorcery shows such as The Witcher and House of the Dragon suffering filming delays due to the pandemic.

But happily, the next clash between Celts, Romans and drugged-up Druids is upon us and the wait has indeed been worth it.

Here's everything you need to know about Britannia season three.

When is Britannia season 3 on TV?

Britannia is already back to rule the airwaves having kicked off its third season on Tuesday 24th August 2021. exclusively revealed the air date of season three, and all eight episodes have also been simultaneously released on streaming service NOW – so fans can binge the whole lot. A similar tactic was used for Britannia season two, as well as other Sky originals such as A Discovery of Witches and Intergalactic.

Filming on the third season was shut down in March 2020 due to the coronavirus pandemic, but Sky announced in September 2020 that filming was back "underway" for the historical drama.

Prior to the show's recommissioning, Mackenzie Crook told that he saw scope for it to continue beyond a third season, adding: “Well, the Romans stayed [in Britain] for 400 hundred years so you’ve got a lot of material there and we’re only a couple of years into the invasion, so who knows?

“I think the Druids were wiped out in a big battle in maybe AD60, around 20 years after the invasion[…] so if I can keep hold of the [Druid] leadership I’ve got a couple of series left in me.”

Britannia season 3 plot

David Morrissey in Britannia
David Morrissey in Britannia (Sky)

Britannia season three see's the introduction of a brand new central (and "terrifying") character, played by Sophie Okonedo (Ratched).

The Death on the Nile actress plays Hemple, the wife of General Aulus (David Morrissey), who "arrives in Britannia to find out why her husband has failed with Lokka’s mission to capture the chosen one, Cait," according to Sky's synopsis – and she certainly shakes things up.

Amena (Annabel Scholey) gets caught up between the terrifying twosome of Aulus and Hemple, as the Celt "finds herself in a lethal Ménage à trois with both of them."

Sophie Okonedo said of her casting: “I’m so glad to be plunged into the weird and wonderful world of Britannia. I was already a fan of the show and its writers Jez and Tom Butterworth, so I jumped for joy when they offered me the wonderful character of Hemple. Without giving too much away I’ll just say this woman has a huge appetite…”

Screenwriter James Richardson added: “Sophie is one of the UK’s greatest actors and we all feel very privileged to have her play our new and particularly malevolent force for series three. She is an actor with an enormous range and manages to make you laugh whilst being completely terrifying. A perfect fit for Britannia! We feel very fortunate to be able to continue making such an ambitious show about a time when everything changes."

Season three has mixed things up a bit as Cait's (Eleanor Worthington-Cox) ongoing journey to become the Chosen One underwent a transformation due to a "decision that will tie her to the future of her war-torn people and their ravaged land." We also have more Druid drama as Cait's mentor Divis (Nikolaj Lie Kaas) gets a mysterious and undesired new job, while Veran (Mackenzie Crook) travels to the underworld and sees the future.

Britannia season 3 cast

Mackenzie Crook, Britannia (Sky, EH)

In addition to Sophie Okonedo's new casting, season three saw the return of actors David Morrissey, Mackenzie Crook, Annabel Scholey, Nikolaj Lie Kaas, Julian Rhind-Tutt, Eleanor Worthington-Cox, and Zoë Wanamaker.

Britannia season 3 trailer

It's only brief – but this season three teaser boasts some stunning visuals and several sweeping shots of the British countryside:

And a second teaser was released just in time for the new series – this time featuring a first look at some epic action.


Britannia series three comes to Sky Atlantic and NOW on Tuesday 24th August. For more suggestions on what to watch now check out our TV Guide, our best series on Netfix guide, best movies on Netflix or the best shows on Amazon Prime.


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