Mark has more than 22 years’ experience in computational nuclear inventory analysis and nuclear materials modelling at UKAEA. He leads a programme covering materials interactions in fusion environments, including activation and waste assessment, atomistic modelling, nuclear data, corrosion, plasma-wall interactions and magnetic effects. His team supports modelling for LIBRTI, STEP, ITER and EU-DEMO. Mark also develops fusion waste handling and decommissioning strategies, including STEP’s integrated waste strategy, working with national and international regulators.