He started his business career with the long-established family firm of James Prain & Sons, jute manufacturers in Dundee. He spent much time working in a voluntary capacity assisting with business arbitration courts and the promotion of British industry He worked for the following companies: • Chairman,
James Prain and Sons Ltd, Dundee, until 1956 • Member, Jute Working Party, 1946–1948 • Member, Scottish Committee, Industrial and Commercial Finance Corporation, 1946–1955 • Vice Chairman, Caird (Dundee) Ltd, 1956–1964 • Director, Tayside Floorcloth Company Ltd, 1946–1969 • Director, Alliance Trust Company Ltd, 1946–1973 • Chairman,
Jute Importers Association, 1947–1949 • Director, The
Scottish Life Assurance Company Ltd, 1949–1972 • Chairman, Association of Jute Spinners and Manufacturers, 1950–1952 • Part-time Member,
Scottish Gas Board, 1952–1956 • Director,
Royal Bank of Scotland, 1955–1971 ==Other Positions Held==