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Yes, Prime Minister S01E04, The KeyS01E04

Yes, Prime Minister · Season 1

Yes, Prime Minister season 1 episode 4: The Key

Aired 30 January 198630 minRated TV-PG

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Where to watch Yes, Prime Minister Season 1 in Australia

Yes, Prime Minister season 1 is streaming in Australia on BritBox (subscription). You can also buy it on Apple TV from $22.99.

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Availability checked 16 November 2026.

What happens in “The Key”

Office politics take precedence over national issues when Sir Humphrey and Bernard fall out with each other after Jim tries to restrict Sir Humphrey’s access to №10.

Episode summary: TMDB.

Before you watch

  • It is episode 4 of 8 of season 1, so watch episodes 1 to 3 first.
  • It runs about 30 minutes.
  • Directed by Sydney Lotterby, written by Antony Jay and Jonathan Lynn.

Cast and crew of this episode

Director
Sydney Lotterby
Writers
Antony JayJonathan Lynn
Guest stars
Deborah NortonPeter Cellier

Credits: TMDB.

More from Yes, Prime Minister Season 1

Previous · S01E03The Smoke Screen23 January 1986Next · S01E05A Real Partnership6 February 1986
  1. E01
  2. E02
  3. E03
  4. E04
  5. E05
  6. E06
  7. E07
  8. E08

Every episode of Season 1Yes, Prime Minister episode guide

Episode names, air dates, runtimes, stills and ratings: TMDB. Air dates are the first broadcast anywhere; where it streams is our daily Australian check.