Some of Curzon's biggest successes as a producer and theatre manager included Monsieur Beaucaire (operetta) (1902), A Chinese Honeymoon (1903), Sergeant Brue (1904), The White Chrysanthemum (1905), The Girl Behind the Counter (1906), See-See (1906), Mr. Hopkinson (1906), Miss Hook of Holland (1907), King of Cadonia (1908), My Mimosa Maid (1908), Dear Little Denmark (1909), and The Balkan Princess (1910; co-written by Curzon). Many of Curzon's shows were filled with spectacle, with exotic sets, elaborate costumes and beautiful chorus girls. He also produced a number of plays starring Ivor Novello, including Enter Kiki (1923), The Firebrand (1926), and Downhill (1926).
One of Curzon's few miscues was to turn down the opportunity to produce The Maid of the Mountains (1916), which became a huge success.
Later in life, Curzon bred racehorses.