Unfortunately, you can't use your Amazon Prime Video, Apple TV, or Roku Channel subscription to access BritBox.com, including our mobile, tablet, and TV apps.
You'll only be able to access and watch the BritBox service where you signed up.
Example: You subscribe to BritBox via Amazon. You won't be able to log in using your Amazon account at BritBox.com; you'll only be able to watch through Amazon.
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