In parallel with his academic career, John works with individuals and teams to help facilitate change in complex organizational settings. He has worked for a wide range of private sector companies, including Six Swiss Exchange (Zurich Stock Exchange), KU, iQuest, GNER, National Australia Group, Yorkshire Bank, British Gas, BT, ICI, Lucas, Delphi, BP, Occidental Petroleum, Bawden Drilling, Glaxo, Reckitt and Coleman (pharmaceuticals), DLApiper, Ladbrokes and Nestle. He has also worked for a range of public sector organisations such as the NHS and Benefits Agency, charities such as NACRO, and the American Army, RAF, and MOD.