I was so shocked and saddened to hear of Graeme’s passing. I worked for him as a freelance writer for nearly 10 years, both at Shell and the ZEP Technology Platform. I also wrote speeches for him, but only because he didn’t have time to write them himself. He was actually one of the most brilliant speakers I’ve ever seen: incisive, inspiring and humorous. It was a joy to listen to him.

As so many have said, he had the most brilliant mind, which I often thought was in a league of its own. Like so many, I also felt huge affection for him and it will always seem surreal that he is no longer with us.