Rachel Simpson was employed as a paralegal within the Crown Prosecution Service (CPS) when she was arrested in June 2020 by officers from the South Wales Police Anti-Corruption Unit. The case was then led by Tarian, the Regional Organised Crime Unit for Southern Wales
Following evidence uncovered through the investigation into the activity of an organised crime group in the Newport area, it became apparent that Simpson had been providing information from police and CPS sources to organised crime groups in Newport and latterly Merseyside for a number of years.