Police are addressing an issue in a number of forensic tests

National Police Chiefs’ Council Lead for Forensic Science, Chief Constable Debbie Simpson said:

“We have been made aware of a quality failure with Randox Testing Services (RTS) which is currently being investigated and a criminal inquiry has been launched by Greater Manchester Police.

“Randox has provided each force with a list of cases that could have been effected. Working in partnership with the Crown Prosecution Service (CPS), we have provided guidance to forces so they are able to review each case to determine if compromised data played a part in prosecution and the CPS will then take appropriate action in any cases identified.

"While this investigation is ongoing, we are working with a number of forensic service providers and the Forensic Science Regulator to ensure that any requirement for forensic services is dealt with in the normal timeframes."