“The Bomb”, Main Deck, The Ark

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 0171d573-38bd-49ac-8998-e3a6d4b05fc7 (CC0).