Investigative Solutions
- International investigation and research service to the legal profession, commerce and private clients. Based in the United Kingdom.
- http://www.investsols.co.uk/

Security Associates
- Fraud and security investigations in Europe and the Middle-East. Based in Nicosia, Cyprus.
- http://www.eurofraud.com

Nationwide Investigations Group
- United Kingdom firm performing investigations throughout the world.
- http://www.nig.co.uk

Ibas
- Provider of data recovery, data erasure and computer forensics, with headquarters in Norway, offices in a number of other European countries and in the United States. Subsidiary of Kroll Ontrack.
- http://www.ibas.com/

Accetta Group
- Performs national and international private investigations for the financial and legal communities.
- http://www.theaccettagroup.com/

Saturn-K
- Investigations, security consultants, trainers and providers of legal, physical and technology security services. Located in Kiev, Ukraine.
- http://www.saturn.k.kiev.ua/en/

Citigate Global Intelligence and Security
- Global business investigation and intelligence services.
- http://www.citigategis.com/

NFC Global, Inc.
- International due diligence, investigations and consulting. Based in Horsham, Pennsylvania.
- http://www.nfcglobal.com/

The Lubrinco Group
- International investigative and protective services. Headquartered in New York.
- http://www.lubrinco.com/

The Pelican Group
- Private investigative agency with offices in Fort Lauderdale, Florida and Sao Paulo, Brazil.
- http://www.investigationsgroup.com/

Orion Management International Ltd.
- International investigative firm based in Golden, Colorado.
- http://www.orionomi.com

Diamond Investigations Pty Limited
- Worldwide investigative services from offices in Melbourne, Australia.
- http://www.diamondinvestigations.com.au/

Risk Analysis
- Security risk management and investigative consultancy with offices throughout Europe.
- http://www.risk-analysis.org/

Detective-Russia Agency
- Investigations, background checks and location of missing persons in Russia and Ukraine. Offices in Moscow and Kiev.
- http://www.detective-russia.com/

Manuel, Daniels, Burke International, LLC
- Investigation firm providing services worldwide from offices in Nevada and Virginia.
- http://www.mdbinternational.com/

Kroll
- International investigations, security, forensic accounting, and risk consulting services. Headquartered in New York with offices in more than 25 countries.
- http://www.krollworldwide.com/

Jell Ltd.
- Independent corporate research, troubleshooting and intelligence-gathering company. Based in England, with an office in Russia.
- http://www.jellgroup.com/

Investigative Resources International
- Long Beach, California firm offering investigative services throughout the world.
- http://www.factfind.com/

The W Group
- International private investigations and risk mitigation. Based in Walnut Creek, California.
- http://www.w-group.net/

Terence Keen & Associates
- Ontario based private investigator providing services in Canada the United Kingdom.
- http://www.investigativepower.com/

Intelsec Consultants Limited
- International investigations, corporate security, counter espionage, analysis and strategic planning. Based in the Cayman Islands.
- http://www.intelsecconsultants.com/

Talon Executive Services, Inc.
- Corporate security consulting and investigation company based in California.
- http://www.talonexec.com

Smith Brandon International
- Worldwide due diligence and business intelligence gathering. Based in the District of Columbia.
- http://www.smithbrandon.com

Fuller Group Security
- Computer crime investigator with offices in Hong Kong and Sydney.
- http://www.fullergroup.com/

Security Associates Group
- Security consulting and investigative firm providing services for business and governments. Based in Miami, Florida.
- http://www.sagnv.com/

No Hiding Place Ltd.
- International investigation and detective agency based in the United Kingdom.
- http://www.nohiding.com

Pinkerton Consulting & Investigations
- European offices located in the United Kingdom, France, Sweden and Germany.
- http://www.pinkerton-europe.com/