Overview
- BBC One airs the first two episodes at 8:30 p.m., with the complete five-part box set becoming available on BBC iPlayer shortly after broadcast.
- The story centers on UNIT’s response to the surfacing Homo Aqua, led by Russell Tovey as Barclay, Gugu Mbatha‑Raw as Salt, and Jemma Redgrave reprising Kate Lethbridge‑Stewart.
- The five-episode run is structured as a two-part launch followed by weekly installments through December 21 in the U.K.
- Russell T Davies and Pete McTighe describe a tougher, more grounded tone without the Doctor, focusing on higher-stakes human choices.
- Production features large Cardiff builds including the Empress Hall and location shoots in Bristol and Mallorca, and early coverage reports broadly positive first reviews.