Derek Wyn Taylor was a British journalist, writer, publicist and record producer. He is best known for his role as press officer to the Beatles, with whom he worked in 1964 and then from 1968 to 1970, and was one of several associates to earn the moniker "the Fifth Beatle". Before returning to London to head the publicity for the Beatles' Apple Corps organisation in 1968, he worked as the publicist for California-based bands such as the Byrds, the Beach Boys and the Mamas and the Papas. Taylor was known for his forward-thinking and extravagant promotional campaigns, exemplified in taglines such as "The Beatles Are Coming" and "Brian Wilson Is a Genius". He was equally dedicated to the 1967 Summer of Love ethos and helped stage that year's Monterey Pop Festival.

Apple Corps Limited is a multi-armed multimedia corporation founded in London in January 1968 by the members of The Beatles to replace their earlier company and to form a conglomerate. The name is a pun for its pronunciation "apple core". Its chief division is Apple Records, which was launched in the same year. Other divisions included Apple Electronics, Apple Films, Apple Publishing and Apple Retail, whose most notable venture was the short-lived Apple Boutique, on the corner of Baker Street and Paddington Street in central London. Apple's headquarters in the late 1960s was at the upper floors of 94 Baker Street, after that at 95 Wigmore Street, and subsequently at 3 Savile Row. The last of these addresses was also known as the Apple Building, which was home to the Apple studio.