The patch on the arm of the astronaut that reads 'Centry Mission IV: Lang, Haywood, Pattillo' is a nod to Ryan Haywood and Jack Pattillo of the gaming entertainment group Achievement Hunter. At the time of filming of the episode, Achievement Hunter was airing gameplay episodes of a Minecraft mod pack entitled 'Galacticraft'. This was confirmed by the patches graphic designer Benjamin Davis on twitter following the airing of the episode.
On the original airing, Creature Design was incorrectly credited to Ray Holman. It has been corrected to Millennium FX on the BBC iPlayer copy.
This is Warren Brown's second time playing a Doctor Who character, he previously played as UNIT officer Sam Bishop in the spin-off audio series UNIT: The New Series (2015-2023).