Harry Craddock was a United States citizen who left during Prohibition and joined the American Bar at the Savoy Hotel, London, in 1920. Craddock was one of the most famous cocktail barmen of the 1920s and 1930s. Craddock's "The Savoy Cocktail Book" was published in 1930, and is still in print today.

Craddock invented a number of classic cocktails, including the famous Corpse Reviver #2 and possibly including the White Lady, and popularized the Dry Martini.