He defended UNIT HQ from Omega's Gell guards. He witnessed the disappearance of UNIT HQ when Omega's time-bridge stop the building to capture the TARDIS. (TV: The Three Doctors) By 2001, he had been promoted to Colonel and was a prominent figure in UNIT's UK branch. He asked for the Brigadier's insight into strange imps surrounding the village of Turelhampton, witnessed by Claire Aldwych, resulting in the Brigadier, Claire and the Sixth Doctor exposing a branch of the Fourth Reich led by Adolf Hitler's son (PROSE: The Shadow in the Glass).