His work remained based on observations of nature, however, often the harbour at St Ives where he spent a great deal of time up until 1963. Blue Movement (1953, Vancouver Art Gallery) is an attempt to render in abstract terms the effect of the rise and fall of boats in a harbour on a twilit evening. Characteristically he used patterns of interlinked shapes—strongly outlined but avoiding geometrical regularity. Frost taught at Bath Academy of Art, 1952–4, Leeds College of Art, 1956–9, and Reading University, 1965–81. He was appointed professor at Reading in 1977 and became emeritus professor on his retirement. He was knighted in 1998. His son Anthony Frost (1951– ) is also an abstract painter of the St Ives School. Further Reading C. Stephens, Terry Frost (2000) ‘Sir Terry Frost’, obituary, The Times (3 September 2003)