Ian R Kenyon was Hon Professor in the School of Physics and Astronomy, University of Birmingham. He was a particle physics experimentalist with experience of R+D in optoelectronics for LHC. He was a member of the UA1 collaboration from its inception; was attached at CERN for three years and took part in the design, construction, data-taking and analysis that led to the discovery of the W- and Z-bosons, Beauty mixing and the gluon spin. Previous publications are: ‘Elementary Particle Physics' for the then Routledge-Kegan-Paul; ‘General Relativity' for OUP; ‘The Light Fantastic: A Modern Introduction to Classical and Quantum Optics' for OUP; and ‘Quantum 20/20: Fundamentals, Entanglement, Gauge Fields, Condensates and Topology' for OUP in 2020.