In Episode Ten of The War Games (1969), the Time Lords offer the Doctor (Patrick Troughton) a selection of appearances for his next incarnation. The Doctor declares that the faces presented to him as sketches on a screen are “too old”, “too fat”, “too thin”, “too young” and ultimately “ridiculous”. Losing patience, the Time Lords make their own choice and when Doctor Who returned in 1970 our hero looked like Jon Pertwee.