When does The War Between the Land and the Sea return?

The War Between the Land and the Sea is an upcoming British science fiction television miniseries. Starring Russell Tovey, Gugu Mbatha-Raw, Jemma Redgrave and Alexander Devrient, the series features UNIT in their attempt to prevent a global war caused by the return of the Sea Devils. It consists of five episodes and is expected to premiere on BBC One on 7 December 2025, and on Disney+ in 2026.