“The Steel Sky”, Scene 1: 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 44a26850-f324-4325-9f42-90a1d20ac196 (CC0).