With a BSc (Hons) and PhD from Dundee University, Dr Mark Piper has been employed by Randox Laboratories Ltd since 1997 as a scientist specialising in the analysis of body fluids for the presence of drugs and alcohol. Since 2007 has been the Toxicology Services Manager of Randox Testing Services (RTS) co-ordinating workplace drug testing programmes and medico-legal / clinical monitoring studies under ISO/IEC17025 accreditation across the UK and Ireland. Secretary of the European Workplace Drug Testing Society and current co-chair for the EWDTS Guidelines review committee (committee member since 2014). Advisor for UK Network Rail’s revised drug and alcohol policy (2022). A member of several forensic toxicology associations and a recognised Court Reporting Officer having spent many years presenting scientific evidence as a forensic expert witness for industrial tribunals up to Crown and Coroners’ Courts