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

Churchill's Ministry of Ungentlemanly Warfare: The Mavericks who Plotted Hitler's Defeat

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

Historical Dictionary of World War I Intelligence

Traitor King: The Scandalous Exile of the Duke and Duchess of Windsor: AS FEATURED ON CHANNEL 4 TV DOCUMENTARY

Codeword Overlord: Axis Espionage and the D-Day Landings

The Quest for Queen Mary

GCHQ: The Secret Wireless War, 1900–1986

Fake History: 101 Things that Never Happened

Hitler's Trojan Horse: The Fall of the Abwehr, 1943–1945

Amritsar 1919: An Empire of Fear & the Making of a Massacre

Encyclopedia of Political Assassinations

Spearhead: An American Tank Gunner, His Enemy and a Collision of Lives in World War II

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

Spycraft Secrets: An Espionage A-Z

The Splendid and the Vile: A Saga of Churchill, Family, and Defiance During the Blitz

The A to Z of British Intelligence

Happy Odyssey