Purvis is a minor character in the 1977 James Bond film The Spy Who Loved Me.
Purvis is a crew member of HMS Ranger, one of Britain's four nuclear submarines. He is on the board when the submarines encounters something strange underwater, the submarine surfaces and see a supertanker's bow opening to swallow the vessel. He remains a prisoner onboard the Liparus until James Bond frees him. Talbot leads a raid on the ship's armory and provides weapons for the newly liberated British, American and Soviet sailors. After the death of Talbot, he joined to the Navigation officer with his three fellow (Andrews and Marshall) to occupy the control room of the Liparus. They killed by machine guns in the wall.