TV series
When a fearsome and ancient species emerges from the ocean, dramatically revealing themselves to humanity, an international crisis is triggered. With the entire population at risk, UNIT step into action as the land and sea wage war.
Availability
Checked Sep 3, 2026
The War Between the Land and the Sea premiered December 7, 2025. We don't have a confirmed streaming, rental or purchase option yet.
When a fearsome and ancient species emerges from the ocean, dramatically revealing themselves to humanity, an international crisis is triggered. With the entire population at risk, UNIT step into action as the land and sea wage war.
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Episode 1
Barclay's ordinary life becomes a world of terror when an ancient species rises from the sea. As UNIT fights for control, the summit on the Thames reveals terrifying secrets.
Directed by Dylan Holmes WilliamsWritten by Russell T DaviesGuest stars Rodo Gener, Henry Nott, Fia Hadeed, Catherine Garton, Delroy Brown, Leo Anthony, Colin McFarlane, Francesca Corney
Episode 2
Barclay becomes humanity's ambassador when the mysterious Salt emerges from the Tank. But his family's life is torn apart when Salt wreaks revenge upon all mankind.
Directed by Dylan Holmes WilliamsWritten by Pete McTigheGuest stars Alys Metcalf, Benito Curteanu, Patrick Baladi, Cordelia Bugeja, Antonia Bernath, Iestyn Arwel, Zina Esepciuc, Shanice Archer
Episode 3
Barclay makes a terrifying descent into the world of Homo Aqua. Back on the land, Kate stands alone as Downing Street conspires with the army to change the course of the war.
Directed by Dylan Holmes WilliamsWritten by Pete McTigheGuest stars Patrick Baladi, William Gaminara, Colin McFarlane, Hannah Donaldson, Mei Nac, George Robinson, Stewart Alexander, Barbara Probst
Episode 4
Barclay and Salt go on the run in a war-torn London as UNIT reels from disaster. But when Tide threatens the land and Gunsberg advances his plans, the Severance schemes demand blood.
Directed by Dylan Holmes WilliamsWritten by Pete McTighe, Russell T DaviesGuest stars Patrick Baladi, Antonia Bernath, William Gaminara, Colin McFarlane, Francesca Corney, Hannah Donaldson, George Robinson, Edward Wu
Episode 5
Barclay stands alone, Salt is lost, UNIT is powerless, and the oceans rise as the war reaches its climax. While traitors conspire, can Barclay find Salt before it's too late?
Directed by Dylan Holmes WilliamsWritten by Russell T DaviesGuest stars Alys Metcalf, Antonia Bernath, Francesca Corney, George Robinson, Barbara Probst, Alexander Devrient, Adrian Lukis, Gethin Alderman
Episode information updated Sep 15, 2026
Available now in United States
These shows are available now and closely match The War Between the Land and the Sea.
Russell ToveyBarclay Pierre-Dupont
Gugu Mbatha-RawSalt
Jemma RedgraveKate Lethbridge-Stewart
Ruth MadeleyShirley Bingham
Patrick BaladiSir Keith Spears
Antonia BernathRose-Marie Hunt
BBC OneUnited Kingdom
Bad WolfUnited Kingdom
BBC Studios ProductionsUnited Kingdom
