“The Steel Sky”, Scene 5: 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 9e4a0cd0-7774-4549-892c-1b8b3a69f8b6 (CC0).