Paul THOMAS, a European Registered Toxicologist, has a PhD in aquatic ecotoxicology and more than 25 years' experience with industrial chemicals, agrochemicals and biocides gained initially at CIT (now Charles River) where he set up the ecotoxicology service and was study director for 4 years, ATOFINA (now ARKEMA) where he practiced ecotoxicology and Risk Assessment for existing substances and then AkzoNobel (now Nouryon) where he was head of department, head of the ecotoxicology GLP and research laboratories and organiser of REACH services for the company for over 6 years. He joined a French consultancy in 2008 as director of the Lyon office specialising in REACH-related services and manager of the ecotoxicology team and contributed strongly to numerous successful registrations out of the >600 substances the consultancy registered since 2010 and he has worked in the area of predictive ecotoxicology since this time. In 2014, while retaining all his consultancy roles, Paul founded and is President of KREATiS, a company specialising in the creation of high accuracy QSARs and other in silico models, to replace experimentation for REACH and other regulations. In 2020 he bought the company together with a human health expert, Dr Carole Charmeau, and they have worked hard with the KREATiS team to bring the company to new heights, adding multiple models to their iSafeRat® model suite, and embracing new technologies such as machine learning and 3D docking models for studying protein-ligand interactions.