Private Investigator services since 1994
Independently audited at 97.3% success rate.
LOI Research Ltd specialize in the most complex multi jurisdiction matters to private individuals business, corporates, VIPs and celebrities from tracing missing persons Japan & Worldwide & or their assets, Litigation Support & Arbitration, Mergers & Acquisition Support, Integrity and Investigative Due Diligence, Fraud, High net worth divorce, separation and family issues. Covert Surveillance, Problem Solving and Cyber Solutions, Difficult and Unusual Cases.
All types of investigations undertaken Japan & Worldwide
LOI guarantees absolute discretion and client confidentiality.
LOI Research Ltd, leaders in complex and major investigations. Best private investigator Japan. We are experts in obtaining accurate hard to obtain hidden information legally and globally in total confidence.

High Profile Clients
Offices Globally
B24/7 availability, in office, over the phone as well as online.
We can visit clients or if preferred schedule Zoom/Google Teams meetings.
Meetings in office by prior appointment.
Email: enquiries@loiinvestigations.com
+ 44 800 1 934 999
INTERNATIONAL TOLL FREE 24hrs
A qualified private investigator in Japan is always available.
Japan Licensed
All LOI Research Japan private investigators employed including vetted subcontractors are licensed throughout Japan states where we have a presence.
As well as in all our international offices.
Bonded insured, fully compliant.











