A. William (Bill) Rutherford is Professor (Chair of Solar Energy Biochemistry) in the Department of Life Sciences at Imperial College London. He had previously exercised part of his scientific career as CNRS Research Director at CEA-Saclay. Using biophysical methods, Bill Rutherford explores the structure and function of photosynthetic reaction centres. His main interest is in Photosystem II (PSII), and in particular the enzyme complex that catalyzes the oxidation of water to supply electrons to carbon binding mechanisms. Oxygen, a by-product of water oxidation, has accumulated in the atmosphere. In his efforts to mimic photosynthesis reactions, Bill Rutherford often uses the active IEHP site as a reference and model. His work on photosynthesis aims to improve efficiency for more sustainable energy production. Bill Rutherford was elected a Fellow of the Royal Society in 2014.