Professor Gus John has delivered services to a diverse range of clients from across the world:
- International Federation of Red Cross/Red Crescent Societies Regional (European) Council;
- Governments of Cameroon, Somaliland, Sierra Leone, Jamaica;
- State governors in Lagos and Delta States, Nigeria;
- British Union Conference of Seventh Day Adventists;
Other previous clients include:
- Councils (Oxford County Council, Leeds City Council, etc);
- Universities (University of Manchester, University of London, etc);
- Trade unions (UNISON, NUT, etc).
