Edmund Warwick – The Doctor’s Double
In this scene from the 1965 Doctor Who story “The Chase”, Edmund Warwick played a robot double of the Doctor, made by the Daleks to confuse the Doctor’s companions and to kill the Doctor. Later in the story, Warwick and William Hartnell both played the robot and the Doctor in scenes where they met, depending on which character was seen most clearly, though both were voiced by Hartnell.
On modern televisions, larger and with higher definition than in 1965, Warwick bears little resemblance to Hartnell. It helped the illusion, too, that we couldn’t watch recordings and replay Warwick’s scenes back in 1965.