Exterior of Cellmark Diagnostics in Abingdon. Brief library shots of Dr Alec Jeffreys who developed the technique at the University of Leicester. Interview with Philip Webb of Cellmark who talked about the development of genetic fingerprinting (DNA testing) and said it was the greatest breakthrough in forensic testing since fingerprints. The new Abingdon facility has been set up by ICI who have the world rights to DNA testing. Views of DNA laboratory work to process the finger prints. Library pictures of blood samples being taken during hunt for killer of Lynda Mann and Dawn Ashworth at Enderby. Colour still of Dawn Ashworth and b/w framed photo of Lynda Mann. Library pictures of Farida Bibi from Derby who is using the technique to fight an immigration case.
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