Never thought I’d see the day. Tested and confirmed working this morning. No UHD support but I’m thankful for small mercies.
I'd posted this also on another thread here, but the reason for the subs being added wasn't the BBC being proactive.Noticed the iPlayer app for tvOS had an update recently, which was surprising – the BBC don't seem to update it frequently. Was doubly-surprised when I saw it casually added support for subtitles!
There's some interesting background detail in this reddit thread – courtesy of a Freedom of Information request – which indicates why it's taken so long to add this feature: