Location filming for "The Mind Robber" took place in June 1968 at Harrison's Rocks in Sussex and Kenley Aerodrome in Croydon. Other filming took place in the same month in Ealing Studios, while studio recording for episodes one and two also took place in June. Studio recording for episodes three, four, and five took place in July 1968. The white robots that close in on Jamie and Zoe in the void outside the TARDIS had been loaned from a previous use in the British science fiction television series "Out of the Unknown".