St John Ambulance

St John Ambulance's logo faintly appeared on the First Doctor's TARDIS (TV: An Unearthly Child) and returned on the Eleventh Doctor's TARDIS. (TV: The Eleventh Hour) During the second incarnation, it was not present. (TV: The Dominators onwards) The sticker was completely removed after the Twelfth Doctor's regeneration. (TV: The Ghost Monument)