A Chinese national has pleaded guilty to using false identities to source hundreds of properties for organised crime.
Feng Xu, 43, was arrested as part of a major investigation into modern slavery and human trafficking on 14 May.
Officers raided his address in Holliday Street, Birmingham and recovered one computer database that listed 446 different addresses which he had been involved in renting.
Investigators found evidence Xu had used multiple false identities to source hundreds of properties
31 different false or fraudulent Chinese or Portuguese passports were found, along with numerous ID documents.
The National Crime Agency say the properties were used as brothels, while others were turned into cannabis farms.
Appearing at Birmingham Crown Court today (8 October) the 43-year-old pleaded guilty to 22 fraud, false ID and money laundering offences.
"Xu was a prolific operator, and an important enabler for multiple different criminal networks involved in prostitution, sexual exploitation and drug production. We believe that taking him out will have caused significant disruption to a number of different organised crime groups involved in sex trafficking and drug production."
Xu is due to be sentenced on 22 November.