AI-powered subtitling has been under development for some time in the form of a plug-in using OpenAI’s speech recognition ...

When enabled, subtitles ... of a video or people suffering from hearing disabilities. There’s an Audio menu on the right where you can choose a different audio language, if available.

this means that there are no subtitles available for that programme. However, 99.9% of the content on the C4 Streaming website has the subtitles feature, including video on demand and live content.