Early in the production of the story, Prime Minister
Margaret Thatcher announced the
1983 United Kingdom general election. This created a sudden demand for BBC studio space and, as a result, the production schedule for the story unexpectedly lost two weeks. Production was completed, but many signs of hurried production are evident. Many scenes had little or no rehearsal, and many scenes received only one take. One of the biggest problems came with the Myrka costume, which was completed only about an hour before it was scheduled to be used, meaning that the two puppeteers inside could not be fitted and had no time to rehearse in it. The costume smelled strongly of paint and adhesive, which one puppeteer said made him feel like he was sniffing glue. The paint on the costume had not dried by the time filming started, and tended to rub off on the sets and other costumes, as can be spotted in several scenes. Many in the cast and production crew have expressed a sense of disappointment with the quality of the finished show; the DVD commentary by visual effects designer Mat Irvine, script editor
Eric Saward,
Peter Davison and
Janet Fielding contained many criticisms of Pennant Roberts' direction of the story and John Nathan-Turner's production of the programme, as well as comments on the special effects, sets and other production problems (the Myrka specifically caused a great deal of amusement). The scenes with the Myrka in Part Three were also later used by former
BBC One controller
Michael Grade during his appearance on
Room 101 as an example of why he found
Doctor Who pathetic and wanted to get rid of it. Scriptwriter Johnny Byrne was unhappy with numerous alterations and edits that Eric Saward made to his script, notably the deaths of the human characters of Preston and Commander Vorshak, who were originally intended to survive. However, in an interview for the DVD's extra features, Byrne said he thought that the basic story was quite solid and effective. This story was Byrne's final televised
Doctor Who story. Byrne later submitted a pitch entitled
The Guardians Of Prophecy, which was a sequel to
The Keeper of Traken (1981), featuring the
Sixth Doctor battling an evil immortal with an army of Melkurs who were threatening the remainder of the Traken Union. However, Byrne did not develop this submission any further.
The Guardians of Prophecy was later 'recreated' as part of the
Big Finish series of "Lost Stories".
Warriors of the Deep was shot on 1-inch
Type C videotape, the first
Doctor Who story to do so. Type C videotape replaced
2-inch Quadruplex videotape on
Doctor Who and many other shows.
Cast notes Stuntman Gareth Milne, who had played George Cranleigh in
Black Orchid (1982), doubled for Peter Davison when the Doctor fell in the tank at the climax of episode one. Ingrid Pitt, who played Dr. Solow, had previously played Queen Galleia in
The Time Monster (1972) alongside
Jon Pertwee. Vincent Brimble who played Tarpok later played Gerald in "
Village of the Angels" (2021) alongside
Jodie Whittaker. Stuart Blake who played Scibus, previously appeared in the 1983 Special "
The Five Doctors" as a Commander and appeared with
Tom Baker as Zoldaz in
State of Decay (1980). It was during production of this story that Peter Davison and Janet Fielding announced to Nathan-Turner their departures from the series. ==Commercial releases==