The Hamilton Kerr Institute, the University of Cambridge's paintings conservation department, has begun an eight-day public technical examination of a large-scale copy of Hans Holbein's Portrait of Sir Thomas More and His Family at Nostell Priory. Conservators are using macro X-ray fluorescence and infrared reflectography to investigate the painting's materials and underdrawing in front of visitors. The study, reported on 4 September 2026, offers the public a rare view of conservation science in action on a work tied to one of Tudor England's most famous lost portraits. The project continues the institute's programme of open technical examinations that bring research directly to audiences.