The revolutionary practice of Reversal film process technique is promoted through glorious shots of London's most famed locations.

This demonstrational film, comprising of a series of iconic shots of London – Buckingham Palace, Trafalgar Square and the Thames - was designed to illustrate how quickly, cheaply and easily reversal processing was. As an inter title states, it was an “entirely new process of direct cinematography, making possible the screening of local events within an hour of their happening at less than one-fifth of their present cost".