[What about BBC iPlayer?
You also need to be covered to download
or watch BBC programmes on BBC iPlayer – live,
catch up
or on demand. This applies to any device and provider you use.]
Catch up is no longer free on the BBC.
And Twitch is owned by Amazon USA
https://en.wikipedia.org/wiki/Twitch_(service)
[I only watch non-UK channels, do I need a licence?
Yes, you need a TV Licence to watch any
TV channels live (broadcast or online),
even if these are from outside the UK.
This applies no matter what device you’re using.]