The true story of British intelligence whistleblower Katharine Gun who—prior to the 2003 Iraq invasion—leaked a top-secret NSA memo exposing a joint US-UK illegal spying operation against members of the UN Security Council. The memo proposed blackmailing member states into voting for war.
You can now watch Official Secrets online on the following streaming providers in the United States.
| Production | Elizabeth Fowler | Producer |
| Writing | Gavin Hood | Screenplay |
| Directing | Gavin Hood | Director |
| Art | Simon Rogers | Production Design |
| Writing | Sara Bernstein | Screenplay |
| Writing | Gregory Bernstein | Screenplay |
| Sound | Paul Hepker | Original Music Composer |
| Production | Melissa Shiyu Zuo | Producer |
| Sound | Mark Kilian | Original Music Composer |
| Costume & Make-Up | Claire Finlay-Thompson | Costume Design |
| Production | Ged Doherty | Producer |
| Production | Kate Dowd | Casting |
| Editing | Megan Gill | Editor |
| Camera | Florian Hoffmeister | Director of Photography |
| Writing | Marcia Mitchell | Book |
| Writing | Thomas Mitchell | Book |
| Art | Ben Clements | Art Direction |
| Art | Andy Watson | Art Direction |
| Art | Bill Crutcher | Supervising Art Director |
| Art | David Morison | Set Decoration |
| Sound | Craig Mann | Supervising Sound Editor |
| Production | Mark Gordon | Executive Producer |
| Production | Matt Jackson | Executive Producer |
| Production | Sara Smith | Executive Producer |
| Production | Gavin Hood | Executive Producer |
| Production | Claudia Bluemhuber | Executive Producer |
| Production | Anne Sheehan | Executive Producer |
| Production | Hugo Heppell | Executive Producer |
| Production | Sarada McDermott | Co-Producer |
| Costume & Make-Up | Nadia Stacey | Makeup Designer |
| Costume & Make-Up | Nadia Stacey | Hair Designer |
| Crew | Sarah Franzl | Stunt Coordinator |
| Crew | Nick Chopping | Stunt Driver |
| Crew | Ben Dimmock | Stunt Driver |
| Crew | Paul Heasman | Stunt Driver |
| Crew | Lee Millham | Stunt Driver |
| Crew | Daniel Rawlins | Stunt Driver |
| Crew | Karen Smithson | Stunt Driver |
| Production | Nancy Bray | Unit Production Manager |
| Directing | Toni Staples | First Assistant Director |
| Directing | Sarah MacFarlane | Second Assistant Director |
| Production | Jenna Berger | Associate Producer |
| Sound | Craig Mann | Sound Re-Recording Mixer |
| Art | Jen Ainsley | Standby Art Director |
| Art | Laura Iwanyckyj | Assistant Set Decoration |
| Art | Florence Tasker | Graphic Designer |
| Art | Rosa Nolan-Warren | Art Department Assistant |
| Art | Jason Bond | Property Master |
| Art | Bob Charlton | Construction Manager |
| Camera | Ossie McLean | "A" Camera Operator |
| Camera | Ossie McLean | Steadicam Operator |
| Camera | Will Morris | First Assistant "A" Camera |
| Camera | Chris King | Second Assistant "A" Camera |
| Camera | Rupert Hornstein | First Assistant "B" Camera |
| Camera | Aaran Lewis Leach | Second Assistant "B" Camera |
| Camera | Jasmine Orrey | Camera Trainee |
| Camera | Joe Steel | Digital Imaging Technician |
| Directing | San Davey | Script Supervisor |
| Sound | Jim Greenhorn | Production Sound Mixer |
| Sound | Hugh Sherlock | First Assistant Sound Editor |
| Lighting | Dan Fontaine | Gaffer |
| Lighting | Simon Atherton | Best Boy Electric |
| Lighting | Sam Chapman | Electrician |
| Lighting | Richard Haigh | Electrician |
| Lighting | Robert Gavigan | Rigging Gaffer |
| Camera | Alex Fraser | Key Grip |
| Camera | Adrian Barry | Grip |
| Camera | Robert Viglasky | Still Photographer |
| Camera | Matt Squire | Still Photographer |
| Camera | Nick Wall | Still Photographer |
| Costume & Make-Up | Tapio Salmi | Makeup & Hair |
| Costume & Make-Up | Anna Morena | Makeup & Hair |
| Costume & Make-Up | Dani Haigh | Makeup & Hair |
| Costume & Make-Up | Carolyn Cousins | Makeup & Hair |
| Costume & Make-Up | Abby Graves | Makeup & Hair |
| Costume & Make-Up | Helen Bolter | Costume Supervisor |
| Costume & Make-Up | Charles Gillies | Costumer |
| Production | Charlotte Cox | Production Coordinator |
| Production | Kelsey Hammond | Production Coordinator |
| Production | Jamie Hollingworth | Assistant Production Coordinator |
| Production | Mari Hopkins | Production Secretary |
| Production | Kristian Turnbull | Production Secretary |
| Production | Cait Downs | Production Runner |
| Directing | Amy King | Third Assistant Director |
| Directing | Amy King | Second Unit First Assistant Director |
| Production | Emma Jane Richards | Location Manager |
| Production | Mark Wilson | Assistant Location Manager |
| Production | Jonathon Lawrence | Assistant Location Manager |
| Production | Joe Gradwell | Location Assistant |
| Production | Ben Arslanian | Production Accountant |
| Production | Becky Scurrah | Assistant Accountant |
| Production | Daniel Hamill | Assistant Accountant |
| Production | Martin Ainscough | Payroll Accountant |
| Production | Clare Harlow | Casting Associate |
| Production | Emma Bolton | Casting Assistant |
| Editing | Traci Duran | First Assistant Editor |
| Editing | PJ Harling | Assistant Editor |
| Sound | Chase Keehn | Dialogue Editor |
| Sound | Laura Wiest | Sound Re-Recording Mixer |
| Sound | Luke Nagy | ADR Mixer |
| Sound | Randy Wilson | Foley Supervisor |
| Sound | Randy Wilson | Foley Mixer |
| Sound | John Sievert | Foley Artist |
| Sound | Jason Charbonneau | Foley Artist |
| Sound | Stefan Fraticelli | Foley Artist |
| Sound | Ron Mellegers | Foley Mixer |
| Sound | John Loranger | Foley Editor |
| Sound | Kristi McIntyre | Foley Editor |
| Sound | Justin Helle | Foley Editor |
| Sound | Brent Brooks | Music Editor |
| Sound | Bronson Buskett | Orchestrator |
| Sound | Mark Kilian | Orchestrator |
| Sound | Paul Hepker | Orchestrator |
| Editing | Doug Delaney | Colorist |
