Following education at Marlborough College and Downing College, Cambridge, John decided to remain in Cambridge where he joined locally-based Investment Research, a greatly admired partnership built by Alec Ellinger, the doyen of technical analysis in Europe. Over the years John became a recognized expert in the technical analysis of UK equities and currencies and held a number of important consultancies.
As technology changed and the euro appeared, removing all the cross-rates between individual European currencies, John modified his approach and embraced the changes. He was always a highly sought-after and competent speaker, able to get the technical analysis message across to both professional and private investors; his heart was always with the former.
When Investment Research was converted into a limited company, Investment Research of Cambridge Limited, John was elected Chairman, a post which he held until his retirement.