E1Captives
Where to watch
Not available in United Kingdom
Streaming in 11 other countries
Box 21 isn't on any streaming service in United Kingdom right now, but it's available in Austria, Belgium, Denmark, Finland and 7 more. Streaming rights are licensed per country.
Seasons & Episodes
E1
E2Plans
E3Hostages
E4The Box
E5Bucharest
E6Janus
Cast
More like this
Box 21 — streaming FAQ
Which OTT platform streams Box 21?
Box 21 isn't on any streaming service in United Kingdom yet, but it's available in Austria, Belgium and Germany and other countries. Streaming rights differ by country — switch your country in the header to see where.
Is Box 21 on Netflix?
No, Box 21 is not on Netflix in United Kingdom as of August 2026.
Is Box 21 on Amazon Prime Video?
No, Box 21 isn't on Amazon Prime Video in United Kingdom right now.
Where can I watch Box 21 for free?
Box 21 isn't streaming in United Kingdom yet, so there's no way to watch it free at the moment.
How many seasons are in Box 21?
Box 21 has 1 season in total (6 episodes). The series concluded in 2020.
Are all episodes of Box 21 out yet?
Yes — all 6 episodes across 1 season of Box 21 are out and available to stream.
Is there a Season 2 of Box 21?
No — Box 21 ended after 1 season, so there is no Season 2.