About a Bookshop

I can not but assume the movie was inspired by this similar event [John meets Yoko] back in 1966 at the height of the world's fascination with the Beatles and all things Brit:
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"John Lennon and Paul McCartney visited Indica Books & Gallery, which had opened in March 1966 at 6 Masons Yard, London. Lennon was looking for a copy of The Portable Nietzsche, but emerged with something quite different.

The shop and gallery focused on the contemporary underground literary and art scene, and was owned by Barry Miles, Peter Asher and John Dunbar. McCartney had invested £5,000 to help open the venture, and had designed the bookshop's wrapping paper and assisted with decorating the interior.

Indica Books was situated on the ground floor, with the gallery downstairs. Indica was where Lennon met Yoko Ono on 9 November 1966.

During this visit Lennon bought a copy of The Psychedelic Experience: A Manual Based On The Tibetan Book Of The Dead by Timothy Leary, Richard Alpert, and Ralph Metzner. At the beginning of the book's introduction he found a line which would be adapted for Tomorrow Never Knows: "When in doubt, relax, turn off your mind, float downstream.""
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Peter Asher was Peter in Peter and Gordon and his sister was Jane Asher the then girlfriend of McCartney

http://www.kindleflippages.com/ablog/