At the end of the 1960s, as a correspondent for The Sunday Times, he was assigned to investigate and report on the breakup of Beatles’ own business, Apple Corps.
Norman is the author of Shout!: The Beatles in Their Generation, described by a New York Times writer as " ... the definitive biography – comprehensive, intelligent, sensitively written and exhaustively researched" of the Fab Four. A Chicago Sun-Times review raved that Shout! is "The best, most detailed, and most serious biography of the Beatles and their time." In October 2008 his 800+ page book John Lennon: The Life was released to some controversy.
Norman has also published biographies of Buddy Holly, The Rolling Stones and Elton John. Additionally, Norman has published six works of fiction, and two plays: The Man That Got Away and Words of Love.