During the outbreak of the Rage Virus, Selena's family was killed and she hid in a barricaded shop in the London Underground with another survivor named Mark.
Frank (played by Brendan Gleeson) was a cheerful cab driver in London and lived with his wife and daughter Hannah in an apartment block near the center of the city.
Sergeant Farrell (played by Stuart McQuarrie) is a veteran soldier of the British Army and serves as Major Henry West's second-in-command.
Corporal Mitchell (played by Ricci Harnett) is a vulgar, cocky, and insensitive soldier under Major Henry West's command.
Donald "Don" Harris (played by Robert Carlyle) is the husband of Alice and father of Tammy and Andy.
Andy Harris (played by Mackintosh Muggleton) is the son of Don and Alice and younger brother to Tammy.
Geoff (played by Garfield Morgan) is an old farmer who lives with his wife Sally on a farm in the country a few miles from Sandford.
Refugee Boy lives in Sandford, several miles upriver from Geoff and Sally's farm, with his mother and father.
Sergeant Doyle (played by Jeremy Renner) is a Delta marksman with the rooftop observation unit of District 1.
Brigadier General Stone (played by Idris Elba) is the ranking officer on-site for the United States Army's 82nd Airborne Division.
He eventually initiates Code Red, a procedure for total extermination of the London populace, with no time available to tell infected from uninfected.
He takes the Harris children to France after they facilitate the second outbreak of the Rage virus, his status is unknown as the last image of his helicopter shows that he has abandoned it.
Allie and her brother Callum were apparently wealthy individuals who lived in London with their father and were good friends with Sophie and her family.
Lieb was a member of "The Financiers", a secret group of industrialists and businessmen who sought to make money by selling radical new products to the world.
Sid was the oldest child of Roger and Barbara and older brother to Sophie and Liam, and was an aspiring musician and adopted the punk-look when he became a young man.
Jamie (played by Aaron Taylor Johnson), a scavenger who lives on the tidal island of Lindisfarne, Northumberland.