Dennis served as an officer in the British Army where his career focus was anti-terrorist operations and international crisis planning. He was Deputy Director of the UK’s Defence Crisis Management Centre and was awarded an OBE for operational leadership. Following his military service he set up a consulting firm providing specialist services to top-tier companies and government agencies. He led teams delivering a wide range of projects which included crisis and financial markets simulations for international corporations, and contingency planning support for UK Government Agencies. Dennis is currently finalising an MSc in Applied Positive Psychology at the University of East London.