Langley (Doctor Who and the Adaptation of Death)

Sergeant Langley took part in the joint human-Kubthukian invasion of a Quav'lor ship. He was portrayed in the film Invasion Earth: 2062 AD. (PROSE: Doctor Who and the Adaptation of Death)

Behind the scenes
Langley is introduced in the story as Private Langley, but is called Sergeant Langley in every subsequent mention.