Paish was born in Croydon on 15 January 1898 and died in Kentchurch, Herefordshire, on 23 May 1988. The son of Sir George Paish, editor of The Statist and part-time economic adviser to Lloyd George, Paish was educated at Winchester College and Trinity College, Cambridge (BA 1921). Between leaving Winchester in 1916, at barely eighteen years of age, and entering Cambridge in 1919, he served as an artillery officer on the Western Front, was severely wounded and was awarded the Military Cross for bravery. On graduation be became an economist with the Standard Bank of South Africa (1921–32) before a long career as lecturer (1932–38), reader (1939–49) and professor (1949–65) at the London School of Economics, specializing in finance. During the Second World War he became deputy director of programmes at the UK Ministry of Aircraft Production (1941–5). From 1965–70 he was a consultant for Lloyds Bank. A Liberal like his father, he gave occasional advice on economic and financial questions to the Liberal Party until its leaders turned their back on liberal economic policies during the 1960s.
From The Biographical Dictionary of British Economists in Oxford Reference.