They came from unpromising places and unglamorous backgrounds. They crashed the Establishment party in one generation, raided the citadels of culture, and brought their idioms, ideas, and passions to the center of British life. The blokes were writers who revitalized British drama, fiction, poetry, and criticism. When Britain was in the economic doldrums, when its supply of great authors was dwindling after World War II, they rebuilt a world-class...