Diploma, Leicester (England) School Architecture, 1954.
Partner, Parker and Roberts, Lincoln, 1953-1963; principal, John Roberts Associations, Lincoln, since 1963; principal, Ian Fraser, John Roberts & Partner, Lincoln, since 1971; principal, John Roberts Architects, Ltd., Lincoln, 1971-1991.
Life member Lincoln Civic Trust. Member Lloyds of London. Fellow Royal Institute British Architects, Chartered Society Designers.
Member London Architectural Association, London, Lincolnshire Society Architects (founding president 1967-1970), Nottinghamshire and Derby Society Architects (vice president 1965-1969), American Chamber of Commerce, British-Arab Chamber of Commerce (member panel since 1985), Guild of Air Pilots and Air Navigators.
Married Carole Maureen Martin, February 25, 1965 (divorced 1979). Children: Simon Marcus, Lucy, Jonathan Martin.