“Counter Plot”, Scenes 7-9: 'j' Room, Corridor and Control Room

On these albums

Doctor Who: The Daleks’ Master PlanTerry Nation & Dennis Spooner starring William Hartnell, Peter Purves & Adrienne Hill · 2001Soundtrack

Doctor Who: The Lost TV Episodes - Collection TwoVarious Artists · 2011

Source: MusicBrainz recording 63e9016a-3e07-4f81-8bbc-f5f65463ab5b (CC0).