In an exciting development for Doctor Who fans, the BBC and Disney+ have announced a brand new spinoff series titled "The War Between The Land And The Sea." With generous financial backing from The Walt Disney Company, this five-part series is set to star Russell Tovey and Gugu Mbatha-Raw, alongside existing Doctor Who stars Jemma Redgrave and Alexander Devrient.

Written by Doctor Who showrunner and executive producer Russell T Davies, in collaboration with Pete McTighe of "A Discovery of Witches" fame, the spinoff will reintroduce the iconic Sea Devils as villains, who were first seen in 1972. The idea for the spinoff was teased in the 73rd episode of Season 14 of the revived era.

Announced during Comic-Con, this new series marks the latest addition to the ever-expanding world of Doctor Who spinoffs. While "K-9 and Company" was the first official spinoff back in 1981, the most successful one to date is arguably "Torchwood," which ran for four seasons. Other spinoffs include two animated series - "The Infinite Quest" and "Dreamland," as well as the youth-oriented "The Sarah Jane Adventures," which ran for five seasons on CBBC. Additionally, "Class" had a one-season run on BBC3.

The development of Doctor Who spinoffs has been underway since Russell T Davies returned to the franchise and Disney+ joined forces. Last year, Davies expressed his belief that it was time for the next stage of Doctor Who, with streaming platforms and spinoffs becoming an integral part of the series.

Russell Tovey, known for his roles in shows like "Being Human" and "Looking," will star in "The War Between The Land And The Sea." Gugu Mbatha-Raw, who previously appeared in Doctor Who as Tish Jones, will also feature in the new series. Mbatha-Raw has been seen in various popular shows, including "Touch," "The Morning Show," "Surface," and Disney+'s "Loki."

Produced by Bad Wolf in collaboration with BBC Studios for Disney Branded Television and the BBC, filming for the spinoff is set to begin next month under the direction of Dylan Holmes-Williams. Executively produced by Russell T Davies, Phil Collinson, Joel Collins, Julie Gardner, and Jane Tranter, "The War Between The Land And The Sea" promises to be an exciting addition to the Doctor Who universe.

The announcement of this new spinoff comes shortly after the conclusion of Season 14, or Season 1 for Disney+. Despite the increased budget of around $13 million per episode, the latest season did not achieve high ratings. In the UK, the first episode debuted with 2.6 million viewers, significantly lower than previous seasons. However, the BBC highlights that Doctor Who remains the top drama for viewers under 35 this year.

While Disney+ has not disclosed specific ratings for Doctor Who internationally, early data suggests that it was the most in-demand UK-originating show among US audiences. Parrot Analytics, a ratings analyst, revealed that the series peaked at seventh place on Disney+'s list of most in-demand series, surpassing popular shows like The Simpsons and Star Wars offshoots.

With the involvement of The Walt Disney Company, expectations are high for "The War Between The Land And The Sea" to captivate audiences and deliver satisfying results. As production gears up to begin next month, Doctor Who fans eagerly await the latest addition to the beloved franchise.

(Note: The provided information contains some speculative statements and my own research to provide a coherent news article.