Gadsden was a member of seven livery companies, including the Worshipful Company of Clothworkers as well as the Worshipful Company of World Traders, and served as founder master of the Worshipful Company of Engineers from 1983-85 [REF].
He was chairman of Private Patients Plan from 1984 to 1996, and then chairman of the PPP Healthcare Foundation until his death [REF].