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John’s caseworking experience covers 35 years the UK, USA, Australia, Netherlands, and NZ. He has examined over 2,000 cases and testified possibly over 200 times. This includes testimony in NZ, Australia, England, Netherlands and the US.
He has co-authored over 200 significant publications in the forensic field. He has presented DNA and glass courses in the UK, USA, Australia, Asia, and New Zealand from 1988 to the present to practising professional forensic scientists. He has supervised five PhD students in the field of forensic interpretation and been involved in international research and development programmes in the area of the forensic interpretation of glass and DNA, including expert systems.
He is one of the developers of STRmixTM.