Adrian has a degree in chemistry and a PhD in isotope geochemistry. He started his career in the geological survey where he specialised in groundwater chemistry, developed isotope laboratory facilities, and gained field experience in water resources and geothermal energy projects in the UK and around the world. Since 1983 he has worked in groundwater investigations for radioactive waste disposal, making a mid-career move to an engineering consultancy and working in recent years as an independent consultant. His knowledge and experience cover the planning and implementation of groundwater chemistry and isotopic investigations and interpretative modelling of resulting data in both crystalline and clay-rich rocks as potential repository hosts. He has been involved in many of the major UK and international projects from early studies through to the present day.