
Reporter Mullen uncovers a scandal linking a senior MP to a KGB operative and a near‑nuclear incident involving a teenage runaway and a U.S. Air Force base. Suspecting a cover‑up, he joins veteran journalist Vernon Bayliss and the MP’s aide Nina Beckam, putting them in the crosshairs of powerful forces desperate to keep the truth hidden.
Does Defence of the Realm have end credit scenes?
No!
Defence of the Realm does not have end credit scenes. You can leave when the credits roll.
Explore the complete cast of Defence of the Realm, including both lead and supporting actors. Learn who plays each character, discover their past roles and achievements, and find out what makes this ensemble cast stand out in the world of film and television.

Greta Scacchi
Nina Beckman

Robbie Coltrane
Leo McAskey

Denholm Elliott
Vernon Bayliss

Gabriel Byrne
Nicholas 'Nick' Mullen

Danny Webb
Danny Royce

Bill Paterson
Jack Macleod

Oliver Ford Davies
Anthony Clegg

Ian Bannen
Dennis Markham

Fulton Mackay
Victor Kingsbrook

Annabel Leventon
Trudy Markham

James Fleet
Ministry Man

Mark Tandy
Philip Henderson

Philip Whitchurch
Cuttings Librarian

Pip Miller
Police Sergeant Ross

David Hatton
Picture Editor

Al Matthews
First US Controller

Daniel Foley
Second US Controller

David Calder
Harry Champion

Graham Fletcher-Cook
Mickey Parker

Vass Anderson
Strick

Frederick Treves
Arnold Reece

Steven Woodcock
Steven Dyce

David Lyon
Political Pundit

Prentis Hancock
Frank Longman

Veronica Duffy
2nd Newsroom Deputy

John Cannon
Greenmont Detention Centre Officer

Alexei Jawdokimov
Dietrich Kleist

Noel Johnson
Club Member

Barbara Coles
Third US Controller

Beverly Anderson
Newscaster

Lyndon Brook
Pugh

John Rees
Minister at Funeral

Nicholas Coppin
1st Newsroom Deputy

Laurance Rudic
Charlie

David Halliwell
Remand Centre Screw

Ravinder Singh Reyett
Club Doorman

Hubert Rees
Club Waiter

George Ellis Jones
DCS Catterick

William Job
Hilton
Discover where to watch Defence of the Realm online, including streaming platforms, rental options, and official sources. Compare reviews, ratings, and in-depth movie information across sites like IMDb, TMDb, Wikipedia or JustWatch.
Challenge your knowledge of Defence of the Realm with this fun and interactive movie quiz. Test yourself on key plot points, iconic characters, hidden details, and memorable moments to see how well you really know the film.
Which newspaper do Vernon Bayliss, Nick Mullen and Jack Macleod work for?
The Times
Daily Despatch
The Guardian
London Chronicle
Show hint
Read the complete plot summary of Defence of the Realm, including all major events, twists, and the full ending explained in detail. Explore key characters, themes, hidden meanings, and everything you need to understand the story from beginning to end.
On a foggy night, a car carrying two men is chased by the police; the radio crackles with reports that the country is on high alert after a terrorist attack in Ankara. When the car is forced down a dead-end road, one of the men, Steven Dyce escapes over a high barbed-wire fence, but the other is captured, leaving a tense thread running through the night.
Dennis Markham, Ian Bannen, a prominent Member of Parliament, becomes the center of a growing media storm. A London paper alleges he was seen leaving a woman’s home on the night she is visited by a military attaché from East Germany. Is he a KGB agent? The question gnaws at his loyalty, and editors and reporters debate whether the story should run as the pressure of public scrutiny tightens around him.
Vernon Bayliss, Denholm Elliott, Nick Mullen, Gabriel Byrne, and Jack Macleod, Bill Paterson, work together at the Daily Despatch. Bayliss is summoned for a private meeting with Markham and explains a link to the German agent that Markham himself has not yet grasped. Meanwhile, Mullen interviews Nina Beckman, Greta Scacchi, Markham’s secretary, and then speaks to Markham’s wife, all while initially posing as a plainclothes officer. The newsroom buzzes as the story, later dubbed the “Markham Affair,” starts making waves across television and newspaper channels.
The pressure mounts as Markham is hounded by the press and ultimately forced to resign. Mullen continues his investigative work alongside Bayliss, who grows suspicious that Markham may have been framed. When Bayliss dies of a supposed heart attack on the same night his flat is ransacked, the mystery deepens. Mullen uncovers press-cuttings and a tape in Bayliss’s desk that hint at a motive far broader than a personal scandal, suggesting a conspiracy worth uncovering.
Driven by the growing clues, Mullen visits the young man who was arrested at the start of the film, explaining that his supposed accomplice is dead. This encounter leads him back to the site where the film began: a high-security, yet seemingly unmanned military base near Brandon, operated by the USAF. There, Mullen suspects a nuclear weapon capability tied to the American presence in the UK, and he senses that Markham’s motives might be tied to efforts to remove such dangers from the country. The theory points toward a deeper power struggle than a simple political salacious story.
With Nina’s help, Mullen presses on, even as a break-in at his own flat and persistent surveillance threaten to derail him. When he attempts to publish, his editor delivers the crushing news: the Official Secrets Act blocks the story, and the newspaper owner, Kingsbrook, intervenes personally to keep it from print. Kingsbrook, a figure reminiscent of a powerful wartime publisher, remains a looming question in the background: who controls the information, and who benefits from keeping it quiet?
The investigation takes another turn when Mullen discovers that the supposed KGB agent is, in fact, a British operative, and he demands to know who supplied that source. The man in question is Anthony Clegg, Oliver Ford Davies. Confronted in a gentleman’s club, Clegg is grabbed by two men and hauled away for questioning by senior officials. The scene ends with no clear explanation, and Mullen returns to a ransacked flat, where Nina arrives just as danger closes in. A bomb explodes, seemingly killing them both, and the room is plunged into smoke and silence.
Yet the fallout is not contained. Nina had already managed to post the incriminating evidence to Germany, allowing the world to glimpse a chain of actions that stretch beyond national borders. The story of the near-nuclear-disaster begins to spread across the European press, leaving viewers to wonder who knew what, and when, about the delicate balance between political intrigue and dangerous military secrecy. The film ends on a note of unresolved tension, with the truth out in the world but the very people who might have controlled it now a part of the same tangled web they sought to expose.
Uncover the Details: Timeline, Characters, Themes, and Beyond!

Coming soon on iOS and Android
From blockbusters to hidden gems — dive into movie stories anytime, anywhere. Save your favorites, discover plots faster, and never miss a twist again.
Sign up to be the first to know when we launch. Your email stays private — always.
Immerse yourself in the magic of cinema with live orchestral performances of your favorite film scores. From sweeping Hollywood blockbusters and animated classics to epic fantasy soundtracks, our curated listings connect you to upcoming film music events worldwide.
Explore concert film screenings paired with full orchestra concerts, read detailed event information, and secure your tickets for unforgettable evenings celebrating legendary composers like John Williams, Hans Zimmer, and more.
Explore all cars featured in Defence of the Realm, including their makes, models, scenes they appear in, and their significance to the plot. A must-read for car enthusiasts and movie buffs alike.
Discover the central themes, ideas, and keywords that define the movie’s story, tone, and message. Analyze the film’s deeper meanings, genre influences, and recurring concepts.
Explore the various alternative titles, translations, and other names used for Defence of the Realm across different regions and languages. Understand how the film is marketed and recognized worldwide.
Browse a curated list of movies similar in genre, tone, characters, or story structure. Discover new titles like the one you're watching, perfect for fans of related plots, vibes, or cinematic styles.
What's After the Movie?
Not sure whether to stay after the credits? Find out!
Explore Our Movie Platform
New Movie Releases (2026)
Famous Movie Actors
Top Film Production Studios
Movie Plot Summaries & Endings
Major Movie Awards & Winners
Best Concert Films & Music Documentaries
Movie Collections and Curated Lists
© 2026 What's After the Movie. All rights reserved.