Forty-one people have had drug-driving convictions quashed after an investigation into alleged data tampering at a lab, the National Police Chiefs' Council said.

The lab in question - Randox Testing Services (RTS) in Manchester - is used by 42 of the UK's 43 police forces.

Forensics lead at the NPCC, Chief Constable James Vaughn, said more than 50 investigations had also been dropped following fresh analysis of some 2,700 cases.

Retesting of more than 10,500 cases opened since 2014 began after allegations that scientists at RTS had manipulated forensics data.

Two men, aged 31 and 47, were arrested on suspicion of perverting the course of justice by Greater Manchester Police and have been bailed until the new year.


Six more people have been interviewed under caution, with one still under investigation.