第一勧業銀行
Lyons started his career as an economist at Chase Manhattan Bank in the Europe Area Office from 1985 to 1986. From 1986 to 1989 he was the Chief UK Economist at Swiss Bank Corporation. From 1989 to 1999 he was Chief Economist and Executive Director at Dai-Ichi Kangyo Bank. Then from 1999 to 2012, Lyons was the Chief Economist and Group Head of Global Research at Standard Chartered Bank, where he was in charge of a division of about 180 staff. In 2010 and 2011, Lyons' team at Standard Chartered was ranked as the top forecasting team globally by Bloomberg. On leaving Standard Chartered, The Times wrote that Lyons "(had) become one of the most influential pundits on the global economy".