Full Services Private Investigation Agency
Independently audited 98.9% success rate (March 2024)
LOI Investigations is a Full Service Private Investigation Agency which specialises in all Private Investigation services, in London, all of the UK and Worldwide. Our team includes both Male and Female Investigators who live in and cover all UK Counties and countries abroad.
LOI Investigations are able to keep clients’ costs affordable. We provide a very high success rate and cater to private individuals businesses, corporates, Lawyers, VIPs and celebrities. From tracing missing persons in the UK & Worldwide to uncovering hidden assets, our private investigators are also experts in Fraud, divorce, separation and family issues.
Our expertise also includes Covert Surveillance, Problem Solving and Cyber Solutions. We are also well known for our ability to specialise in the most difficult and unusual Cases.
Our pricing structure also means that we are able to keep our services affordable, without detracting from the expertise and diligence that our Agency is renowned for, both in the U.K. and abroad. Our Clients are our priority and no case is too small or difficult.
Our Offices are locally staffed in 57 countries, with local, bilingual, Private Investigators. Our Private Detectives are professional, qualified and fully insured. All of our investigators hold local licenses where applicable and therefore we have a complete global reach.
All Types of investigations Worldwide
LOI Investigations, guarantees absolute discretion and client confidentiality.
We are leaders in all types of investigations. We are particularly well known for our ability in obtaining accurate, hard to obtain hidden information legally, worldwide in total confidence.
UK : 0800 1 934 999
Worldwide : +44 800 1 934 999
FREE PHONE / TOLL FREE
WORLDWIDE
Qualified Professional Bilingual.
Private investigators available
24 hours per day, 7 days a week.
COMPETENT-RELIABLE-EXPERIENCED
FREE CONSULTATION
Investigation Services
Unfaithful Partner Investigations
LOI Investigations offers specialised Infidelity Investigations Services, designed to provide you with concrete evidence and peace of mind. Our highly trained private investigator UK employ discreet surveillance techniques. Reach out to us for a confidential and comprehensive consultation.
Missing Persons Tracing
Searching for a missing person in the UK or worldwide? LOI Investigations offers private investigator services & private investigator to locate lost friends, family members, or debtors. Utilizing the latest investigative techniques, our experienced team provides effective and discreet missing persons investigations.
Surveillance
At Line of Inquiry, we offer in-house surveillance private investigators led by experienced professionals, including a former military intelligence officer and a Senior Surveillance officer with 23 years’ experience. Our surveillance services, available across the UK and worldwide, include mobile and static solutions, under-cover work, and the use of advanced technology. Whether discreet or covert, our fool-proof method ensures professional evidence gathering to meet your needs.
Cyber Security Investigations
Line of Inquiry offers Cyber Security Investigation services to thwart planned cyberattacks and minimize damage. Utilizing advanced monitoring, intelligence procedures, and in-depth data analysis, we stay ahead of potential cyber threats. Our capabilities extend to accessing information from the dark web, aiding in criminal investigations, fraud, and identity theft cases. Our innovative tools and methods, combined with AI-backed automation and expert human expertise, enable us to identify different types of threats and build defense systems tailored to individual business needs.
Worldwide Phone Tracing Services
LOI Investigations offers a GDPR-compliant UK & Worldwide Mobile Phone (Registered, Pay-as-you-go (burner phones), VOIP(Voice Over Internet Providers)) and Landline Tracing service. Obtain the full name, registered address, duration at the address, and additional connected information with utmost confidentiality.
Social Media and online harassment
Line of Inquiry provides specialized services to combat Social Media & Online Harassment in the U.K., including racial abuse, threats, and cyberbullying. Working with legal experts & private detectives UK, they use advanced technology to trace online interactions and prosecute harassers.
Asset tracing and recovery
Our asset tracing services are designed to help our clients identify hidden assets, such as bank accounts, real estate and other investments, that have been intentionally hidden to avoid detection. We use a variety of tools and technologies, including open source intelligence (OSINT), public records searches, and deep web analysis to trace and identify hidden assets. Our team of experienced private investigators work closely with our clients to understand their unique needs and develop a customized asset tracing strategy that meets their specific requirements.
Background Checks
LOI Investigations specializes in accurate and thorough background checks for individuals and companies. Offering pre-employment background checks, including verification of education, employment history, and criminal record checks, our experienced private investigators ensure the safety and security of your business and personal life. Trust LOI Investigations for reliable background checks with confidentiality and fast turnaround times.
Relationship Matters, Family Issues and Divorce
Dealing with family issues and divorce? Line of Inquiry offers specialized private investigator UK services to assist in personal and financial matters, including hidden assets, pre-divorce background checks, and post-separation surveillance. Whether you suspect infidelity, need to assess financial status, or are concerned about child well-being, our experienced UK Private investigators handle these delicate situations with discretion and sensitivity. Contact Line of Inquiry to navigate family disputes and divorce with confidence and peace of mind.
Jewellery Theft
At LOI Research, we specialize in the recovery of stolen jewellery, art, and high-value items. Our dedicated team of private investigator UK is renowned for their expertise in tracking and recovering valuable items that have been lost or stolen. Our services are not just limited to the UK; we operate globally, providing our clients with the best chance of recovering their valuables.
Relationship Matters & Family Issues
Comprehensive support in family law matters, including relationship disputes and divorce cases. Our services extend to missing persons tracing, surveillance, and personal protection against blackmail. Utilizing advanced technology and an experienced team, we offer discreet and effective solutions tailored to the unique challenges faced by families.
Private Clients
We at Line of Inquiry offer a range of services for private clients, including missing persons tracing, background checks, surveillance, and asset tracing. Specialized services are also available for relationship matters, identity theft, and blackmail. Our experienced team utilizes advanced investigative techniques to provide effective and discreet solutions tailored to individual needs.
Criminal Defence
Line of Inquiry has a proven record of success providing legal support for extremely high-profile defendants as well as members of the general public. At LOI we scrutinise all police evidence, reconstruct crime scenes and re-analyse the line of questioning our clients may have been subjected to at the police station and/or by the Prosecution in court.
We work with highly experienced former Police Detectives, independent forensic laboratories and crime scene experts.
Private Prosecutions
For Private Prosecutions, we have an in-house solicitor at your disposal as well as certified court enforcement officers. Our Private Prosecution service can offer the legal knowledge and litigation support you need. If you have exhausted all of your resources, don’t despair, because our team of investigative professionals has the expertise you need to bring your case to court.
Sexing and Catfishing
Considering a Sexing & Catfish Investigation? Line of Inquiry provides in-depth, comprehensive reports to help you in your Catfish Investigation. Catfishing consists of taking a false identity online to win somebody’s affection. They hide behind a fake profile picture and create a backstory to their lives to trick the victim into trusting them. Contact LOI for expert private investigator for Catfish Investigations.
Blackmail
Line of Inquiry understand that each blackmail case is unique. Our approach is highly customized, taking into account the individual circumstances and specific demands of each situation. Whether it’s a case of corporate espionage, personal vendetta, or cyber harassment, our Private investigators for Blackmail investigations are equipped with the skills and tools necessary to address the challenge effectively. Leveraging Technology in Blackmail Investigations
Suspicious Death
At Line of Inquiry, we have the necessary experience to investigate unsolved murders, suspicious death and questionable suicide. There are also a worrying number of innocent men and women serving life or lengthy prison sentences for crimes that they did not commit. We have access to many sources who can help us to obtain court papers for re-examination and we have access to independent forensic laboratories, forensic experts, private investigators and retired police detectives.
Acquisition and Mergers
Considering an acquisition or merger? Line of Inquiry provides in-depth, comprehensive reports to answer key questions before you commit to a transaction. Our experienced team goes beyond paper, assessing potential risks, financials, cybersecurity, and IP issues, ensuring you know exactly what you’re entering into. Contact LOI for expert support in the acquisition and merger arena, backed by case studies and testimonials.
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Logistics & Supply Chain Fraud
Logistics and supply chain fraud involves deceptive practices aimed at exploiting vulnerabilities in the movement and storage of goods. Common forms include theft, misrepresentation of shipments, counterfeit products, and invoice fraud. Such activities can disrupt operations, inflate costs, and damage reputations, making robust monitoring, verification, and risk management essential.
Businesses
Line of Inquiry offers a comprehensive suite of services tailored for businesses. These include business intelligence, asset tracing, debtor tracing, and competitive intelligence. Specialized services extend to acquisition and mergers, investment intelligence, and supply chain risk mitigation. Our experienced team employs advanced technological tools and investigative techniques to ensure your business stays ahead in a competitive market.
Intellectual Property
LOI Investigations conduct IP Property Investigations always underneath the direction of Legal Counsel. LOI is an established, recognised, intellectual Property Investigation Consultancy. Since 1996, we have provided valuable insights, with completely reliable and actionable resources which support intellectual Property Investigations
Cyber Investigations
We offer a comprehensive range of Cyber Investigation services, including tackling catfishing, social media harassment, and cyber threats. Our expertise extends to cryptocurrency investigations and technical counter-surveillance. Utilizing a team of former FBI agents, we provide robust solutions to protect both individuals and businesses from various cyber risks.
Lawyers
We at Line of Inquiry specialize in litigation investigation and support services, offering worldwide assistance for both civil and criminal cases. Our services include fraud investigations, asset tracing, and family law support. Utilizing advanced technology and techniques, we work closely with legal teams to provide expert analysis and testimony, adhering to the highest ethical standards.
Emerging Markets
Offices In London and Globally
24/7 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.
Featured in Media
Building the Future
Have Achieved :
- Home office full criminal record cleared all employees
- Full Members of the Institute of Professional Investigators
- Fully Insured and Certified.
- Information Commissioner’s office (ICO)
Who We Are :
Line of Inquiry (LOI) has an impressive network of Cyber Investigators (Government Level trained), specialist unit surveillance experts and many other skilled experts. We have excellent, well-placed contacts throughout the world.
Line of Inquiry Head Office is 5 Chancery Lane, London WC2A 1LG, conveniently located in the heart of the Legal District and has further staffed offices in the UK, the Channel Islands, Gibraltar, the Isle of Man, Ireland, Monaco, Luxembourg, Switzerland, Norway, Sweden, Denmark, Finland, Cyprus, Malta, Germany, Netherlands, Warsaw, Lisbon, Algarve, Washington, New York, The Hamptons, San Francisco, Los Angeles, Houston, Dallas, Denver, Florida, Toronto, Singapore, Hong Kong, Macau, Malaysia, Kuala Lumpur, Thailand, Bangkok, Pattaya, Phuket, Cambodia, Vietnam, Taiwan, Japan, Indonesia, Bali, Qatar, Kuwait, Dubai, Kazakhstan, Uzbekistan, Kyrgyzstan, Australia, Sydney, Melbourne, Brisbane & Gold Coast, Canberra, Saudi Arabia, Philippines, China, Singapore, Mauritius, Bermuda
Our business is to get you the information you require discreetly undetectably and in strict confidentiality.
More About Us
We are a team of highly skilled private investigators, combining traditional investigative techniques with modern technology. Line of Inquiry (LOI) is a globally recognised private investigation consultancy, known for solving complex problems across various fields.
Our founder was also commissioned to author a report on press intrusion, privacy, and protection, which was translated into all FIFA (Fédération Internationale de Football Association) member languages.
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Achieved Credentials
Our Credentials
Line of Inquiry has licensed representatives in multiple countries, composed of experienced and qualified male and female private investigators. While we operate and have contacts in Russia, we do not have a permanent representative there. However, a Line of Inquiry investigator can meet you confidentially at any location of your choice to discuss your case in detail.
We take legal action against fake reviews and third parties who replicate or misuse content from our website, or impersonate or Line of Inquiry in any fraudulent manner.
We are also skilled at legally tracing emails, YouTube, Facebook, LinkedIn, and Instagram posts and comments, even when VPNs are used. Whether you’re a private individual, sole trader, SME, or corporate, we can help prosecute fake reviews and protect your reputation. Working with a leading London lawyer, KC, and our in-house Cyber Team, we ensure robust legal support in this area.
Please call :
UK : 0800 1 939 333
Outside UK : +44 800 1 935 777
