As London is submerged below floodwaters, a woman gives birth to her first child. Days later, she and her baby are forced to leave their home in search of safety. They head north through a newly dangerous country seeking refuge from place to place.
| Directing | Mahalia Belo | Director |
| Production | Leah Clarke | Producer |
| Production | Adam Ackland | Producer |
| Production | Liza Marshall | Producer |
| Production | Sophie Hunter | Producer |
| Production | Amy Jackson | Producer |
| Production | Benedict Cumberbatch | Executive Producer |
| Production | Jodie Comer | Executive Producer |
| Production | Sebastien Raybaud | Executive Producer |
| Production | Eva Yates | Executive Producer |
| Writing | Megan Hunter | Novel |
| Camera | Suzie Lavelle | Director of Photography |
| Production | Jason Cloth | Executive Producer |
| Production | Pieter Engels | Executive Producer |
| Production | Lizzie Francke | Executive Producer |
| Production | Suraj Maraboyina | Executive Producer |
| Production | Kate Maxwell | Executive Producer |
| Production | Fanny Soulier | Executive Producer |
| Production | Mark Strong | Executive Producer |
| Production | Claudia Yusef | Executive Producer |
| Production | Shaheen Baig | Casting |
| Art | Laura Ellis Cricks | Production Design |
| Art | Daniel Draper | Supervising Art Director |
| Costume & Make-Up | PC Williams | Costume Design |
| Costume & Make-Up | Louise Coles | Hair Designer |
| Costume & Make-Up | Louise Coles | Makeup Designer |
| Costume & Make-Up | Ali Halliday | Prosthetics Sculptor |
| Production | Pat Karam | Production Manager |
| Directing | Debbie Bowser | First Assistant Director |
| Directing | Tor Cook | Second Unit Director |
| Directing | Louise Griffin | Second Unit Director |
| Directing | Joe Payne | Second Assistant Director |
| Crew | Kelcie Warner | Floor Runner |
| Crew | Dan Chester | Vehicles Coordinator |
| Art | Alice Clelland | Assistant Set Designer |
| Art | Freya Osborne | Art Department Assistant |
| Art | Natalie Preston | Graphic Designer |
| Sound | Jason Bennett | Boom Operator |
| Visual Effects | Keith Devlin | Visual Effects Supervisor |
| Visual Effects | Theodor Groeneboom | Visual Effects Supervisor |
| Crew | Nathan Aldous | Stunts |
| Crew | James Apps | Stunts |
| Crew | Adam Bowman | Stunts |
| Crew | Sam Durrani | Stunts |
| Crew | Sarah Franzl | Stunt Coordinator |
| Crew | Erol Ismail | Stunt Double |
| Camera | Max Boon | Camera Trainee |
| Camera | Lauren Byrne | Second Assistant "B" Camera |
| Lighting | Dean Chambers | Electrician |
| Camera | Charlie Cowper | Steadicam Operator |
| Camera | Rekha Garton | Still Photographer |
| Camera | Sandra Pennington | Second Assistant "B" Camera |
| Camera | Claire Quinn | Dolly Grip |
| Camera | Rose Ryke | Camera Trainee |
| Camera | Guillem Zamora | Camera Trainee |
| Costume & Make-Up | Isabhelle Dambros | Costume Supervisor |
| Costume & Make-Up | Nazareno Di Nicola | Assistant Costume Designer |
| Costume & Make-Up | Jay Hudson | Costume Assistant |
| Costume & Make-Up | Shyanne Sanders | Costume Assistant |
| Costume & Make-Up | Ray Wooldridge | Costume Supervisor |
| Editing | Roger Harlow | Dailies Manager |
| Production | Duncan Laing | Location Manager |
| Production | Ajay Lotay | Assistant Location Manager |
| Production | Natasha Caralie Payne | Location Manager |
| Production | Charlotte Peters | Location Manager |
| Art | Raul Tarifa | Location Scout |
| Directing | Shaida Kazemi | Script Supervisor |
| Directing | Carole Taylor | Script Supervisor |
| Crew | Hannah Banks | Stand In |
| Production | Emma Cullen | Accounting Trainee |
| Crew | Robert Ellis | Unit Medic |
| Production | Inga Fabian | Assistant Production Coordinator |
| Production | Amy Graham | Assistant Accountant |
| Production | Abbie Jemson | Production Assistant |
| Crew | Daniel Rogers | Health and Safety |
| Production | Richard Rumble | Production Secretary |
| Production | Jacqueline Rumens | Production Coordinator |
| Production | Jordan Sharkey | Production Assistant |
| Production | Sharon Soor | First Assistant Accountant |
| Crew | Ellen Steers | Unit Publicist |
| Production | Zina Win-Lemmers | Production Assistant |
| Production | Catherine Yeats | Production Coordinator |
| Sound | Anna Meredith | Original Music Composer |
| Sound | Jens Rosenlund Petersen | Supervising Sound Editor |
| Production | Rob Harper | Executive Producer |
| Production | Fani Ntavelou-Baum | Executive Producer |
| Writing | Alice Birch | Writer |
| Editing | Arttu Salmi | Editor |
| Art | Caspar Newbolt | Title Designer |
| Production | Dave Caplan | Executive Producer |
