Hi @LAWood,
Welcome to the Roku Community!
Thanks for getting in touch about this missing content on BritBox.
It would be better to get help from the channel support team on what they can suggest and how they can help you out regarding this.
The channel provider oversees and maintains the majority of Roku's channels. This also includes their content availability.
Please keep us posted on what you find so we can further work on it.
Thanks,
Rey
ERey.
Roku Community Moderator