The Society much regrets to hear of the death of Member Sir Michael Berridge FMedSci FRS on 12 February 2020 at the age of 82. Born in Southern Rhodesia (now Zimbabwe) he gained a PhD at Cambridge studying nitrogen excretion in insects. After postdoctoral work in the US, he returned to Cambridge in 1969, becoming a Principle Scientific Officer at the AFRC Unit of Insect Physiology and Pharmacology in the Department of Zoology, and eventually Head of the Laboratory of Molecular Signalling at the Babraham Institute from 1994-2004. Berridge is known for his discovery of inositol trisphosphate as an intracellular second messenger which leads to the release of calcium within cells. The author of many highly influential reviews, he gave The Society’s Annual Lecture in 1986. Awarded numerous honours and prizes, including the Lasker Prize in 1989, Michael Berridge was knighted in 1998. Read his obituary in Physiology News here.