The National Nuclear User Facility (NNUF) project is a Government investment in the UK’s nuclear future, providing state-of-the-art experimental facilities for research and development in nuclear science and technology. NNUF was established to support the Government Nuclear Industrial Strategy launched in March 2013, and had substantial additional funding awarded in 2019. There are currently 30 facilities housed in 12 universities, the UK Atomic Energy Authority, the National Nuclear Laboratory and Diamond Light Source, most of them available for external access to undertake work on nuclear materials.