Question to the Home Office:

To ask the Secretary of State for the Home Department, what guidance his Department provides for police forces on their positive obligation to investigate allegations of trafficking; where such guidance is published; and if he will make a statement.

In line with other crimes, there is a positive obligation on police to record allegations of modern slavery under the National Crime Recording Standards. Once recorded, all crimes must be assessed, which constitutes an investigation. This guidance is published on gov.uk and is available via:
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/694433/count-violence-apr-2018.pdf
The College of Policing Approved Professional Practice (APP) provides further guidance to forces on modern slavery investigations. This guidance is published on the College of Policing APP website, available via:
https://www.app.college.police.uk/app-content/major-investigation-and-public-protection/modern-slavery/