In a brown shadow box frame.

Reinganum attended the Academie Julian in Paris and was one of Leger's six private students in his studio in Montmartre. On his return to London in 1926, Reinganum took his portfolio to Maurice Gorham, the art editor of the Radio Times, who bought one of his drawings on the spot and started Reinganum on his freelance career as illustrator. During the 1930s and 1940s, together with Eric Fraser, Reinganum became responsible for the style of the Radio Times. His association with the Radio Times was to continue for 40 years. The discipline that this work demanded, the speed and accuracy with which he had to absorb information and interpret it, informed his painting and graphic design.

In 1926, with Nicolas Bentley, Reinganum formed the Pandemonium Group, a loosely knit group of "bright young things" that held regular exhibitions at the Beaux Arts Gallery, where they began their tentative experiments with abstraction.

Reinganum disliked categories, both of medium and style, and did his best to avoid them. His paintings were exhibited under the banner "abstraction" but, gradually, the world at large dubbed him a Surrealist and he was swept up in the wave of British Surrealism exhibitions in the 1970s. His paintings have been shown in 20 exhibitions with "Surrealism" in their title, together with other members associated with the movement that included: Edward Burra, Eileen Agar, Merlyn Evans, Conroy Maddox, Tristram Hillier, John Piper and Roland Penrose.