For more than 15 years, David served as the Secretary of the Engineering Professors' Council and was a much admired and beloved member of our community of academics. A memorial page has been set up on the EPC website where a number of his colleagues and other members of the EPC have posted their personal tributes: https://epc.ac.uk/article/tributes-to-prof-david-harrison-honorary-secretary-of-the-epc/