Peter Checkland, British management scientist and academic, died on May 17, 2026, at the age of 95.
He was an emeritus professor of systems at Lancaster University and developed soft systems methodology, or SSM, a systems-thinking approach to complex problem situations. Born in Birmingham on December 18, 1930, he attended George Dixon’s Grammar School and earned a first-class M.A.
in chemistry from St John’s College, Oxford, in 1954. He spent 15 years working in industry as a manager in ICI’s chemicals business before joining Lancaster University’s Systems Engineering department in the late 1960s, where he later became professor of systems and led an action research programme.
Peter Checkland, 95, British management scientist and academic.