Theo Crosby (1925-1994) was an architect, sculptor, writer and designer. Working collaboratively across a range of disciplines, he was influential in shaping perceptions of the built environment of the late twentieth century. Crosby studied in South Africa, before coming to Britain in the late 1940s. In London he became involved with the Independent Group and conceived its landmark exhibition ‘This is Tomorrow’, at the ICA in 1956. In 1965 he added his name to the practice of Forbes Fletcher Gill, which became Pentagram in 1972. Alongside his work at Pentagram, he sustained a wide range of other projects, including exhibitions such as ‘How to Play the Environment Game’ (Hayward Gallery, 1973). One of his most celebrated architectural projects is Shakespeare’s Globe, which was completed after his death.