Allen Jack+Cottier (AJ+C) is an urban design, architecture and interior design practice. Principals Michael Heenan and Peter Ireland head up the Sydney architectural practice of over 80 staff, in their Chippendale studio. John Allen began the firm in 1952 and in 1956 formed a partnership with, university friend Russell Jack. The firm, initially called John Allen and Russell C Jack was renamed Allen Jack+Cottier in 1964 when Keith Cottier became a partner. In 2001, Cottier was awarded the Australian Institute of Architects' highest honour, the Gold Medal.