“The Steel Sky”, Scene 4: Control 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 3a05e453-a82c-4277-ae7e-f2c188a81140 (CC0).