 In these later years, he still travelled and lectured, with plans reported in August 1966 for a three-month stay in Kenya to co-ordinate planning in a new medical school.He gave the 14th MacEwen Memorial Lecture at the University of Glasgow on 21 November 1967, under the title 'The Advancement of Surgery'.Also in 1967, Illingworth was one of the founders of Tenovus-Scotland, a medical charity established by ten initial donors in a similar way to the Tenovus cancer charity based in Wales.