He is the NPL/UK representative on international metrology committees related to optical radiation measurement such as BIPM Consultative committee on Radiometry and Photometry (CCPR), its corresponding Euramet Technical Committee and also represents those bodies as a liaison on relevant WMO committees. During his career, he has also managed the resources and personnel of a 20 person research group and been the coordinator of several large EU projects, lead of a variety of ESA projects as well as many other international collaborations spanning not only Europe but also Asia and Americas. Nigel Fox’s current research interests include all aspects of optical radiometry (sources, materials and detectors) primarily over the spectral region 250 nm to ~ 50 μm, including particular skills in laser radiometry, cryogenics, vacuum instrumentation, detector/instrument design and characterisation. In the last two decades he has taken a particular interest in how to apply this to improve the accuracy of Earth observation and climate monitoring. This includes: pre-flight calibration of satellite sensors, post-launch calibration and validation through sensor to sensor comparisons, establishing surface based test sites (Land and Ocean), development of quality assurance/traceability strategies and associated uncertainty evaluation for EO/climate data and derived bio-geophysical variables.