in the second week of April 1965. On 9 April, Martin and a film unit travelled to Camber Sands; to avoid interrupting rehearsals for The Space Museum, David Newman and Barbara Joss stood in for Russell and O'Brien, respectively, with the main actors overdubbing their dialogue later. The East Sussex County Council granted permission for the BBC to pay local resident Laurence Nesbitt to dig two holes at the beach with timber shoring: one for the buried Dalek, and the other for Ian's trap for a Dalek. The two Time-Space Visualiser sequences for the first episode were recorded on 12 April at Ealing Studios on Stage 3A/B; the first required actor Robert Marsden as Abraham Lincoln, while the second required Roger Hammond, Vivienne Bennett, and Hugh Walters as Francis Bacon, Queen Elizabeth I, and William Shakespeare, respectively. The Mary Celeste evacuation sequence from the third episode was recorded on 13 April on Stage 3A/B; it was the show's first use of a large water tank, with several stunt actors falling into the water. The battle between the Daleks and Mechonoids and shots of the Mechonoid city were filmed on Stage 3A/B from 14–15 April. Rehearsals for the first episode began on 26 April 1965. Weekly recording began on 30 April in Studio 1 at Riverside Studios. Delays with effects props provided by Shawcraft Models led to the first episode's recording session overrunning by ten minutes. On 6 May, Russell and Hill were released in the afternoon of rehearsals for the second episode to pose for about 20 photographs used to illustrate their return home in the final episode; the shoot was directed by Douglas Camfield and designed by Barry Newbery as part of the pre-filming work for The Time Meddler. Locations for the photographs included the Houses of Parliament, Hyde Park, Trafalgar Square, Westminster Bridge, and White City tube station. The recording session of the second episode on 7 May overran due to the lack of a fast rewind machine for retakes and issues with cutting the 35mm film sequences. Russell and Hill were again released in the afternoon of the first day of rehearsals for the third episode, 10 May, to film a short insert at Ealing Film Studios outside the maintenance garage for their arrival home; the explosion of the Dalek time ship was achieved by a bright flash of light. The short scene of Ian and Barbara