Instead of standard text, the subtitles are rendered in a "ransom note" DIY font style (similar to the Never Mind the Bollocks album art), using safety pin icons to denote speaker changes.
When characters use 70s British street slang or "punk-speak," a small bracketed note appears in the corner (e.g., if someone says "bollocks," the subtitle might briefly highlight the specific 1977 legal battle over the word).
This turns the subtitles from a basic accessibility tool into an for fans who want to dive deeper into the history of the band.