Mr Campbell was the manager of UNIT's electronics supply shop in the 1970s.
Biography
Carol Bell warned Liz Shaw that Campbell liked to flirt with the few female officers in UNIT HQ. Liz therefore felt uneasy when she went to find some components for the Third Doctor's electron microscope. (PROSE: The Scales of Injustice [+]Loading...["The Scales of Injustice (novel)"])
Liz recounted to her mother that the Doctor liked to regularly nick items from the supply shop late at night, breaking in with his sonic screwdriver. Campbell would find Liz in the morning and hand her stacks upon stacks of requisition forms, which amounted to a large percentage of the paperwork she had to do as UNIT's scientific advisor.
After defeating the Apocalypse Clock, the Doctor noted it was late at night and perhaps he should make his way over to Campbell's supply. (AUDIO: The Last Post [+]Loading...["The Last Post (audio story)"])
Jo Grant arranged with Campbell to deliver some parts to the Third Doctor's laboratory. Jo thought he was "a dolly Scotsman". (TV: Terror of the Autons [+]Loading...["Terror of the Autons (TV story)"])
After the Doctor's mind was replaced, Jo caught out the impostor by saying that Mr Campbell could make them a new quantum field manipulator when, in fact, the Doctor had built it. (AUDIO: The Hidden Realm [+]Loading...["The Hidden Realm (audio story)"])