Figurative and abstract artist, architect, teacher and writer. He studied at St Martin’s School of Art and Royal College of Art, 1954–7, teaching at the Royal College from 1973. He was an early disciple of the American architect Richard Buckminster Fuller, whose first London exhibition he organised, and he ran his own architectural consultancy, Keith Critchlow Associates. Critchlow was interested in a variety of subjects related to art and architecture: geometry, mathematics, pattern and order in space. He was an expert on sacred architecture. Was represented in the 1988 Royal College of Art show Exhibition Road. Lived in London.