Bryson (Invasion of the Dinosaurs)

Private Bryson was a UNIT soldier under Brigadier Lethbridge-Stewart. Sarah Jane Smith met him when she escaped from Operation Golden Age headquarters.

Later, when Captain Mike Yates was holding the Doctor, the Brigadier and Sergeant Benton at gunpoint, having revealed himself as part of the conspiracy, Bryson entered the room with a tea tray, unaware of what was going on, and offered the captain a cup — giving Benton the opportunity to overpower and disarm Yates. (TV: Invasion of the Dinosaurs)