Albert Arnold
From Tardis Wiki, the free Doctor Who reference
Staff Sergeant George Albert Arnold was an commissioned officer in the British Army. He took part in the fight against the Great Intelligence and its robot Yeti in the London Underground. He was killed and his body was taken over by the Intelligence. His body was destroyed when the Intelligence was defeated. (TV: The Web of Fear)
Behind the scenes
Staff Sergeant Arnold's full name is revealed in PROSE: Downtime.