Other works

(1937) Novel (as "Sapper"): "The Challenge" (filmed as The Challenge (1948), Bulldog Drummond in Africa (1938), Bulldog Drummond Strikes Back (1934))

(1933) Novel (as "Sapper"): "Bulldog Drummond Strikes Back" (aka "Knockout"; filmed as Bulldog Drummond Strikes Back (1947))

Novel: "Bulldog Drummond and the Oriental Mind" (filmed as Bulldog Drummond's Bride (1939))

(1929) Novel (as "Sapper"): "Temple Tower" (filmed as Bulldog Drummond's Secret Police (1939))

(1926) Novel: "The Final Count" (filmed as Arrest Bulldog Drummond (1938))

(1925) Novel: "The Third Round" (filmed as Bulldog Drummond's Peril (1938), Bulldog Drummond's Third Round (1925))

(1932) Novel: "The Return of Bulldog Drummond" (aka "Bulldog Drummond Returns"; filmed as Bulldog Drummond's Revenge (1937)).

(1928) Novel: "Female of the Species" (filmed as Bulldog Drummond Comes Back (1937))

(1935) Novel: "Bulldog Drummond at Bay" (filmed as Bulldog Drummond at Bay (1937))

Playwright: "Bulldog Drummond Again" (filmed as Bulldog Drummond Escapes (1937))

Playwright: "Woman in Bondage" (filmed as Woman in Chains (1932))

Novel (as "Sapper"): "Three of a Kind" (filmed as Love on the Spot (1932))

(1920) Playwright (as "Sapper"): "Bulldog Drummond" (filmed as Bulldog Drummond (1929), Bulldog Drummond (1922))

Story (as "Sapper"): "Poppies of Flanders" (filmed as Poppies of Flanders (1927))

(1922) Novel: "The Black Gang" (filmed as The Return of Bulldog Drummond (1934)).

(1936) Novel: "Ask for Ronald Standish".

(1937) Novel: "Bulldog Drummond Double Header".

Novel: "The Death Scratch".

(1923) Novel: "The Dinner Club".

(1934) Compilation: "Fifty-One Stories".

(1931) Novel: "Finger of Fate".

(1930) Novel: "Four Rounds of Bulldog Drummond".

(1930) Novel: "Guardians of the Treasure".

(1932) Novel: "Island of Terror".

(1932) Novel: "Jim Brent".

(1932) Novel: "Jim Maitland".

(1933) Novel: "Ronald Standish".

(1919) Novel: "The Man in Rat Catcher".

(1921) Novel: "Out of the Blue".

(1927) Novel: "The Saving Clause".

(1935) Novel: "Shorty Bill".

(1930) Novel: "Tiny Carteret".

(1934) Novel: "When Carruthers Laughed".

(1926) Novel: "Word of Honor".