Songs by legendary Liverpool four-piece band The Beatles were being played on repeat to customers sitting inside Cultures Deli and Drafthouse.
Oliver Green, 32, works behind the counter as a barista.
He said: “We just know that there’s a big film production being made, essentially.
“And we’ve heard various different things from various different people about what it may or may not be.”
Asked about the playlist, he remained coy as to whether it was a subtle hint.
“Potentially, it’s not for me to say,” he said.
Two teenage girls sitting outside the cafe claimed to have spotted actor Paul Mescal coming out of a shop further down the road.
He is among the cast of The Beatles: A Four-Film Cinematic Event, a series of four biographical films based on the lives and career of the Fab Four, directed by Sam Mendes.