The series was created and written by Matt Charman, who also serves as showrunner, and received a full series order from Sky Television in October 2024.

Tahar Rahim and Izuka Hoyle were announced in February 2025 to lead the cast, alongside supporting actors including Eddie Marsan, Catherine McCormack, Leonie Benesch, Finn Bennett, Sam Troughton, Laurie Davidson, Ken Nwosu, Brían F. O'Byrne, and Youssef Kerkour.

Filming took place in Wales in 2025, with locations including Cardiff, and part of the production's funding came from the Welsh government.

The series is directed by Otto Bathurst, with later episodes helmed by Pia Strietmann, and produced by Binocular Productions.

The first six-episode series premiered on 30 April 2026 on Sky Atlantic, and the show was renewed for a second series just two weeks later, on 14 May 2026.