Professor Richard Brown received his BSc and PhD from Imperial College, London, in 1997 and 2000, respectively. Since then, he has worked for NPL. He is an NPL Senior Fellow and NPL’s Head of Metrology, with responsibility for overseeing the accuracy of the UK’s national standards of measurement, ensuring their comparability internationally, and enabling their dissemination through the UK’s measurement quality infrastructure. He has published over 280 peer-reviewed papers on environmental measurement and fundamental metrology and has received numerous awards for his work. www.npl.co.uk/people/richard-brown