When the Beatles are arguing over who will manage them, John, George, and Ringo refer to the agent they want to hire as "Bruce Grossman". In real life, the agent's name was Allen Klein.
In the 90's, when Linda and her friend Chrissie Hynde (vocalist of rock band The Pretenders) are in the garden, Chrissie raise up her right arm and Linda takes a photograph of her, and then says "it could be an album cover". The cover of 1999 Pretender's album "Viva el Amor" is the photograph depicted in the movie, taken by Linda.