At Her Majestys Secret Service: The Chiefs of Britains Intelligence Service, MI6

Nuclear War: The bestselling non-fiction thriller, shortlisted for the Baillie Gifford Prize 2024

Double Cross in Cairo: The True Story of the Spy Who Turned the Tide of War in the Middle East

The End of Faith: Religion, Terror, and the Future of Reason

Historical Dictionary of British Intelligence: Edition 2

Shadow Government: How the Secret Global Elite Is Using Surveillance Against You

Encyclopedia of Political Assassinations

The Main Enemy: The Inside Story of the CIA's Final Showdown with the KGB

Cold War Spymaster: The Legacy of Guy Liddell, Deputy Director of MI5

The Day After Roswell

Spycraft Secrets: An Espionage A-Z

The Girl with Seven Names: A North Korean Defector’s Story

Spies Who Changed History: The Greatest Spies & Agents of the 20th Century

No Is Not Enough: Defeating the New Shock Politics

Historical Dictionary of Signals Intelligence

Long Walk To Freedom: 'Essential reading' Barack Obama

Historical Dictionary of Sexspionage

This Is How They Tell Me the World Ends: Winner of the FT & McKinsey Business Book of the Year Award 2021

The A to Z of British Intelligence

Fear: Trump in the White House