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Prosecutors and investigators can use this guidance to get advice on:
the different types of comparison and interpretation evidence
factors that affect the reliability of this type of analysis
the requirements of the Forensic Science Regulator and the Criminal Justice System regarding expert evidence
This second issue has been updated to:
reflect recent changes to legal provisions
cover the updated regulator’s codes
It supersedes the 2015 guidance, which was published in partnership with the Crown Prosecution Service, Metropolitan Police Service and the National Crime Agency.