I worked for 25 years in the drugs analysis section of the London Laboratory of the Home Office Forensic Science Service, which was closed in 2012. Since then I have been providing advice and statements of evidence to criminal defence solicitors in cases involving alleged drugs offences, reviewing prosecution scientist’s work where necessary.

My areas of expertise include the analysis of controlled drugs and bulking agents, examination of drug traces on items (including banknotes), measurements of drug purities, physical and chemical comparisons of drug materials and associated packaging materials, assessments of cannabis cultivation facilities and illicit synthetic drug production.