https://www.radiotimes.com/tv-programme/e/gymb6m/qi--s16-e1-panimals/
Apparently I can't load a screenshot unless I have somewhere to store it online, which I don't. That episode might have expired from iPlayer by the time you see this, but on a more recent one, e.g.
https://www.radiotimes.com/tv-programme/e/g2w58g/qi--s16-e4-parts/
(currently available for 21 days) there should be a button below the big picture, above the social media buttons. I looked at the "All Resources" in AdBlock, but couldn't see any requests that look like the description of the button in "inspect Element", where it's in a div with the class watch-actions.I'm using AdBlock version 3.20.0 with EasyList, EasyPrivacy, Anti-Circumvention filters and AdBlock custom filters (which I tried clearing before reporting), on Firefox 63.0b13 under the latest Windows 10 (which updated today, but I'm pretty sure this button has been hidden for a long time and I just realised it should be there).