 With colleagues, he conceived the ICCROM course on 'Scientific Principles of Conservation', which was launched in Rome in 1974, and in which he also taught.In 1976 he contributed to the new ICCROM course on 'Preventive Conservation' and was a regular lecturer at ICCROM until 1989.Following his retirement he was a trustee of the National Museums and Galleries on Merseyside from 1986 to 1991.