Shrigley finds humour in flat depictions of the inconsequential, the unavailing and the bizarre - although he is far fonder of violent or otherwise disquieting subject matter. Shrigley's work has two of the characteristics often encountered in outside art - an odd viewpoint, and (in some of his work) a deliberately limited technique.

His freehand line is often weak, which jars with his frequent use of a ruler; his forms are often very crude; and annotations in his drawings are poorly executed and frequently contain crossings-out (In authentic outsider art, the artist has no choice but to produce work in his...