This book is dedicated to Jonathan’s and Bea’s lifetime careers. It further illuminates the facts and ideas which dot the paths they traced in Biochemistry and Physiology, elaborating on how these landmark achievements were made and how the haeme proteins community still refers to them. With the field of haeme protein science such a flourishing area, the contributors to this book predict Jonathan and Bea, having played such a seminal role, will continue to be key figures for quite some time to come.