The main theme of this exhibition is the investigation of the nature of visible language, which forms the core of Johnston’s work. As both artist and designer, he considers his work in these two fields to be separate parallel practices, each being informed and influenced by the other. His art works predominantly explore the slippery nature of language and its operations, and play with issues of meaning and representation. The exhibition also includes a selection of his commissioned design work, in particular publications for many leading artists and cultural institutions.