28 Years Later
Aaron Taylor-JohnsonJamie
Alfie WilliamsSpike
Ralph FiennesDr. Kelson
Jodie ComerIsla
Jack O'ConnellSir Jimmy Crystal
Chi Lewis-ParrySamson
Edvin RydingErik Sundqvist
Christopher FulfordSam
Stella GonetJenny
Kim AllanJimmy's Mother
Sandy BatchelorJimmy’s Father
Geoffrey NewlandAnthony
Joe BlakemoreDave
Celi CrosslandPregnant Infected
Robert RhodesJimmy Jimmy
Erin KellymanJimmy Ink
Sam LockeJimmy Fox
Maura BirdJimmy Jones
Ghazi Al RuffaiJimmy Snake
Emma LairdJimmima
Connor NewallJimmy Shite
Haley FlahertyJimmy's Auntie
Gordon AlexanderJonno (uncredited)
Col NeedhamDead Body #6 (Uncredited)- KKris DeediganGuy (uncredited)
- SSienna GiblinGirl Villager
Amy CameronRosey
Rocco HaynesYoung Jimmy
Hayley WaltersTeenage Girl Villager- PPeter LabasSlow Low #1
- KKat KitchenerSlow Low #2
- JJason Kuang Yao LeeSlow Low #3
- EEmber StormSlow Low #4
- JJake GrimesHanging Man
- CChris GregoryBerserker
- HHelen RowlandsInfected Woman
- HHarriet TaylorJimmy's Cousin Delilah
- HHannah Allan-RobertsonJimmy's Sister
- AAnnabelle GrahamJimmy's Sister
- OOlivia MorleyJimmy's Sister
- TTheadora RawlingsJimmy's Sister
- DDarcie SmithJimmy's Sister
- IIsla VickersJimmy's Sister
- LLachlan TuckerBaby Isla
- WWinnow ShortBaby Isla
- OOlivia Grace LeeBaby Isla
- LLucas TooleBaby Isla
- CCohen Lewis WilliamsonBaby Isla
- MMyles WoodhouseBaby Isla
- AAngus NeillEmaciated Infected (uncredited)
- RRuMacAccordionist (uncredited)
Toyah WillcoxTeletubbies Narrator (voice) (archive recording) (uncredited)