Robert Sheehan (Misfits) leads a cast of rising actors (such as Hera Hilmar with Hugo Weaving and Stephen Lang thrown in for good measure). The story is set in a future world devastated ecologically and technologically, where certain cities such as London are run by engines and move about Earth, giving them the ability to prey on other smaller towns for resources.

The plot centers on a teen named Tom Natsworthy who, along with a young woman from a territory known as the Outlands, uncovers a mystery that could change the world order.

Production is under way in New Zealand. Character details for the British actors were not revealed.

Malahide may be best known for playing Balon Greyjoy in HBO's hit fantasy.

Salmon co-starred on the recent Limitless TV show and 24: Live Another Day and appeared in movies such as 2016's Criminal and London Has Fallen.

In addition to appearing in Roots, Page was in Brit show Waterloo Road.