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Best Sci-Fi on Netflix UK 2021

Updated April 2026 · Data via TMDB

The best sci-fi films on Netflix UK released in 2021, ranked by audience and critic ratings via the TMDB database. From critically acclaimed releases to overlooked gems to audience favourites to breakout hits, these are the top-rated sci-fi titles available to stream on Netflix UK.

Ratings here are TMDB community scores, which closely track IMDb in distribution. To see the live IMDb and Rotten Tomatoes scores for these and every other Netflix title directly on the Netflix interface, install the Flix-Rate Chrome extension.

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  1. 1

    My Hero Academia: World Heroes' Mission (2021)

    7.6 615 votes

    A mysterious group called Humarize strongly believes in the Quirk Singularity Doomsday theory which states that when quirks get mixed further in with future generations, that power will bring forth the end of humanity. In order to save ever…

  2. 2

    Don't Look Up (2021)

    7.1 9,234 votes

    Two astronomers go on a media tour to warn humankind of a planet-killing comet hurtling toward Earth. The response from a distracted world: Meh.

  3. 3

    Space Sweepers (2021)

    7.1 1,136 votes

    When the crew of a space junk collector ship called The Victory discovers a humanoid robot named Dorothy that's known to be a weapon of mass destruction, they get involved in a risky business deal which puts their lives at stake.

  4. 4

    Oxygen (2021)

    6.6 1,534 votes

    A woman wakes in a cryogenic chamber with no recollection of how she got there, and must find a way out before running out of air.

  5. 5

    Outside the Wire (2021)

    6.4 1,912 votes

    In the near future, a drone pilot is sent into a deadly militarized zone and must work with an android officer to locate a doomsday device.

  6. 6

    Stowaway (2021)

    6.0 644 votes

    A three-person crew on a mission to Mars faces an impossible choice when an unplanned passenger jeopardizes the lives of everyone on board.

  7. 7

    Awake (2021)

    5.9 1,149 votes

    After a sudden global event wipes out all electronics and takes away humankind’s ability to sleep, chaos quickly begins to consume the world. Only Jill, an ex-soldier with a troubled past, may hold the key to a cure in the form of her own d…

  8. 8

    Mother/Android (2021)

    5.8 828 votes

    Georgia and her boyfriend Sam go on a treacherous journey to escape their country, which is caught in an unexpected war with artificial intelligence. Days away from the arrival of their first child, the couple must face No Man’s Land—a stro…

  9. 9

    Thunder Force (2021)

    5.5 1,322 votes

    In a world where supervillains are commonplace, two estranged childhood best friends reunite after one devises a treatment that gives them powers to protect their city.

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