“The Plague”, Scenes 9-11: Main Deck, Commander’s Room and Side Room

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 fe307d2f-380d-478a-a101-694d9308839f (CC0).