1965: William Hartnell (1908 - 1975), the first incarnation of TV's Dr Who, feels the hairless pates of two ticklish co-stars. They are appearing as the Teknix, bald mutated humans employed in Space Security.

19th May 1964: Dr Who encounters the ancient Aztecs in an episode of the famous TV series. From left to right, the actors are John Ringham, William Russell, Jacqueline Hill, William Hartnell (1908 - 1975) and Keith Pyott.

William Hartnell as Dr Who, peers through his monocle at two extra-terrestrials during filming of the popular science fiction series, 'Dr Who' at the BBC's Shepherds Bush Studios in London. 

Actor Jon Pertwee (1919 - 1996) as Dr Who from the BBC children's television series of the same name.

British actor Tom Baker in his best-known role as Dr Who, between two of his arch enemies, the Daleks at BBC TV Centre, London, 1974.

Tom Baker, as Doctor Who, and Mary Tamm as his companion, Romana, on the set of the BBC television science fiction series 'Doctor Who', at BBC TV Centre, London, 25th April 1978.

British actor Tom Baker who plays the Doctor in the BBC Television Series Dr Who. Pictured here with his assistant Romana played by Mary Tamm and the robot dog K9.

Tom Baker and Elisabeth Sladen in Doctor Who (1963)

Dr Who (Tom Baker) meets one of the monsters from his new series. 

 English actor Tom Baker in his role as the fourth incarnation of Doctor Who in the British science fiction television series of the same name. With him are two of his arch-enemies the Daleks in 1975 in London, England. 

Sharon D. Clarke, Bradley Walsh, Jodie Whittaker, Tosin Cole, and Mandip Gill in Doctor Who (2005)

Bradley Walsh, Jodie Whittaker, Tosin Cole, and Mandip Gill in Doctor Who (2005)

Ncuti Gatwa in The Church on Ruby Road (2023)