Morrison (The Time Warrior)
From Tardis Wiki, the free Doctor Who reference
Professor Morrison was a scientist in the 20th century. He worked at a top secret research facility to produce space hardware.
When scientists began disappearing, he and the other scientists were confined by UNIT to the facility for their safety. He was kidnapped by the Sontaran Linx, who brought him to the Middle Ages. Linx hypnotised Morrison to help repair his spaceship.
When Professor Rubeish snapped the scientists out of the hypnosis, the Third Doctor returned Morrison and all the other scientists to the 20th century. (TV: The Time Warrior)
Behind the scenes
The actor who played Morrison received no on-screen credit.