Although such subjective thoughts aren't suitable for Wikipedia, I think it's worth noting here that he was a much-loved and influential figure in the world of twentieth-century British phonetics. It was good that he had a festschrift (edited by Jack Windsor Lewis) dedicated to him. I feel privileged to have been taught by him, and I know I learned a lot from his books and papers. It would be nice if someone would expand this article to say more about him.
[UPDATE: I have now change "Chair" to "Professor"]