The Australasian Radiation Protection Society notes with great sadness the passing of Professor Roger Clarke CBE, FRCR, FSRP, BSc, MSc, PhD, DUniv, whose influence on radiological protection extended strongly across Australia, New Zealand, and the wider Asia–Pacific region. Through his leadership of the International Commission on Radiological Protection and his engagement with professional societies and regulators in this region, Sir Roger made a lasting contribution to the development of radiological protection practice that continues to underpin standards and guidance used in Australasia today. His legacy will be felt for generations.

ARPS extends its sincere condolences to Sir Roger’s family, friends, and colleagues around the world.