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

The War Between the Land and the Sea was filmed from August to December 2024. Russell Tovey, Gugu Mbatha-Raw, Jemma Redgrave and Alexander Devrient lead the series. UNIT must take action to prevent a global war caused by the return of the Sea Devils. The series is set to premiere on BBC One on 7 December 2025, and on Disney+ in 2026.