I was sad to hear of John’s passing. I was lucky enough to be taught Structural Geology by him as a second year student at Imperial College in the early 1970’s. He was a superb teacher and had the gift of being able to explain complicated concepts with great clarity. The legacy he leaves behind through his teaching and research is simply amazing and had and will continue to have a significant impact on the study of structural geology. My sincere condolences to his family.