In the film, since The Beatles never went on to make the music that they became famous for, they ended up leading very ordinary lives. Well, that’s if the movie’s final cameo is any indication.
At the end of Yesterday, Jack actually gets to meet John Lennon. Because Lennon never became an international rockstar, he lived a quiet life in the English countryside. He’s a 78-year-old artist, played by an uncredited actor in the movie, which only adds a greater mystique to his character.