Marius had led the Electrochemistry group since July 2023. He joined NPL in 2021 and was previously Group Leader of the Dimensional Metrology group. He has a technical background in engineering, with a focus on metallurgy in the nuclear and aerospace sectors, and has professional experience covering engineering, research, and team management together with more limited experience of working in Government and in overseas development. He is a published author of scientific papers, a Chartered Engineer and a member of the Institute of Materials, Minerals and Mining (IoM3).