This page is from APP, the official source of professional practice for policing.
All reported incidents of modern slavery should be recorded on the force crime system in accordance with the following provisions and, for forces live on the Home Office Data Hub, against the listed specific codes.
All referrals made by the police into the national referral mechanism (NRM) and/or incidents where victims report to police directly must be subject of a recorded crime of modern slavery.
Once recorded and classified, a reported incident of modern slavery will remain recorded as such unless, or until, it is reclassified as a confirmed crime of modern slavery in addition to any other notifiable crime as appropriate. Such reclassification must take place as soon as the reporting officer is satisfied that it is more likely than not that a notifiable crime has been committed or a positive grounds decision is returned. The decision to record a crime must not be delayed pending the outcome of the criminal investigation.
The relevant force crime registrar can advise on modern slavery crime recording.
For further information, go to the Home Office Crime Recording Rules for Frontline Officers and Staff 2025/26.