The recent expansion of the Cryo-EM facility investment was supported through funding from the Industrial Strategy Challenge Fund (ISCF) Synthetic Biology Standards Project; financed by the Department for Business, Energy and Industrial Strategy’s (Department for Science, Innovation and Technology). It contributes to our collaboration with the Synthetic Biology Industrial Accelerator (SynbiCITE) at Imperial College London (ICL) and is an example of NPL’s continued commitment to supporting healthcare and life science research and development through the application of Metrology.