“The Steel Sky”, Scenes 2a-b, 3, & Telecine: The Jungle

On these albums

Doctor Who: The ArkPaul Erickson and Lesley Scott starring William Hartnell, Jackie Lane & Peter Purves · 2006Soundtrack

Doctor Who: The TV Episodes - Collection SixVarious Artists · 2013

Source: MusicBrainz recording 8da092bc-8c5c-4896-9fa9-86f585c8d34a (CC0).