Quoting a civil rights web site
"Previously, fingerprints and DNA samples taken would have to be destroyed in the event of the person being acquitted, or if the charges were dropped or not pursued. Following amendments to PACE by the Criminal Justice and Police Act 2001, the police now have powers to retain fingerprints and DNA samples lawfully taken from any person - regardless of whether or not they are subsequently convicted of an offence."
PACE=Police And Criminal Evidence act. Had Mugabwe passed it there would have been howls.