+ Institution of Civil Engineers, U.K.
+ Nigerian Society of Engineers and the Council for the Regulation of Engineering in Nigeria.
+ Institution of Mechanical Engineers, U.K.
+ Institution of Electrical Technology, U.K.
+ Energy Institute.
+ Institution of Chemical Engineers, U.K.
+ Institute of chartered secretaries and administrators;
+ Chartered Management Institute.
+ Geological Society, London.
+ Society for Petroleum Engineers.
+ Institute of Marine Engineering, Science and Technology.
+ Association of Project Management Practitioners.
+ Chartered Institute of Purchasing and Supply.
+ Chartered Institute of Personnel and Development.
+ Chartered Institute of Personnel Management.
+ Association of Chartered Certified Accounts.
+ The Institute of Chartered Accountants of Nigeria.