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Paul is an optical physicist and data scientist who has worked for over 20 years in cancer research. Since gaining a PhD in Laser Physics from the University of Southampton, he has developed software for fluorescence microscope systems, in particular fluorescence lifetime microscopy, and associated image processing. He is the main author of TRI2, the fluorescence lifetime analysis program, and a key developer for the open source FLIMJ package for ImageJ. Now at KCL, he is applying multivariate survival analysis techniques to cancer patient risk prediction, diagnosis and treatment stratification. Combining data from different sources, such as immunology, genetics, medical imaging and microscopy, to produce signatures that are predictive a biological or patient response.