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Affordable & Competitive Rates to Suit any Budget

Offering a Balance of Cost-Effectiveness and Unparalleled Expertise in Investigative Services, Tailored to Meet Your Specific Needs

Private Investigators UK & Global All Services Agency

Rated as one of the best private investigations and business intelligence companies in the world.
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Unfaithful Partner Investigations

LOI Global LTD specialises in Infidelity Investigations Services, offering discreet surveillance and evidence gathering within UK legal boundaries.

UK & Worldwide Phone Tracing Services

LOI Global LTD offers a GDPR-compliant UK & Worldwide Mobile Phone and Landline Tracing service. Obtain the full name, registered address, duration at the address, and additional connected information with utmost confidentiality.

Missing Persons Tracing

Finding missing persons requires a wide range of expert skills, access to global networks and the ability to source accurate information quickly. Tracing nationally and worldwide.


At Line of Inquiry, we have our own in-house surveillance Investigators, led by a former military intelligence officer.

Family Law

Pre and post-divorce, lifestyle and financial investigations

Asset Tracing/Fraud

Our team is highly skilled at identifying cases of fraud and embezzlement, even when they are obscured by complicated corporate, nominee or trust structures and disbursed across multiple jurisdictions and countries.

Cyber solutions

Social media, online harassment, global database access, catfish investigations, cyber security intelligence. High success rate!

All types of FRAUDS

Have you ever been scammed?
Bitcoin, cryptocurrencies, want your money back?
Need deep due diligence?

If the information exists we get it

Confidential, discreet & FAST.

No case too big. – No case too small.

Whatever you want to know, we will get you the answer.

A company that does what it promises no matter what!

Featured in Media

BBC News BBC 2 CNN France Channel 5 News Daily Mail U.K. NBC Sky News The Sun U.K. BBC Radio 4 BBC News 24 ABC News CNBC 60 minutes Australia ABC Australia Bloomberg BuzzFeed CNBC Arabiya EOnline Fox News USA Today Good Morning America RTL The Sun on Sunday 9 Network Australia Heart Radio Canada i 24 News Foxtel Australia SRF Hollywood Reporter SAT 1 Metro Newspaper London Fuji TV Sunday Times U.K. The Washington Post Huffington Post ITVX Netflix La Vanguardia Informativos Telecinco El País Diari Ara Diario ABC The Telegraph Newsweek

Full services Agency for private clients, business, lawyers, families and VIPs.

Independently audited at 97.3% success rate.

LOI Global Ltd specialize in the most complex UK and multi jurisdiction matters to private individuals business, corporates, VIPs and celebrities from tracing missing persons UK & 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 UK & Worldwide

LOI guarantees absolute discretion and client confidentiality.

LOI Global Ltd, leaders in complex and major investigations. We are experts in obtaining accurate hard to obtain hidden information legally and globally in total confidence. 

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.


UK : 0800 1 939 333
Worldwide : +44 800 1 935 777


missing persons investigation

Missing Persons Tracing

Searching for a missing person in the UK or worldwide? LOI Investigations offers private investigator services to locate lost friends, family members, or debtors. Utilizing the latest investigative techniques, our experienced team provides effective and discreet missing persons investigations.

Unfaithful Partner Investigations

LOI Global LTD offers specialised Infidelity Investigations Services, designed to provide you with concrete evidence and peace of mind. Our highly trained investigators employ discreet surveillance techniques. Reach out to us for a confidential and comprehensive consultation.


At Line of Inquiry, we offer in-house surveillance 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 such as trackers, electronic bugs, and military-grade drones. 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.

UK & Worldwide Phone Tracing Service

LOI Global LTD offers a GDPR-compliant UK & Worldwide Mobile Phone 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, they use advanced technology to trace online interactions and prosecute harassers.

Asset Tracing & Recovery

Find Hidden Assets with LOI Investigations - Our Asset Tracing and Financial Investigation services are designed to help individuals and businesses identify hidden assets, uncover financial fraud, and protect their financial interests. We specialize in tracing assets such as bank accounts, real estate properties, and investment portfolios. Contact us today to discuss your asset tracing needs and how we can help you protect your financial interests.

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.
missing persons investigation

Relationship Matters, Family Issues and Divorce

Dealing with family issues and divorce? Line of Inquiry offers specialized private investigator 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 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.


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.


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.

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.

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 Mossad Operatives, FBI agents, and hacking specialists, we provide robust solutions to protect both individuals and businesses from various cyber risks.


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.

When to Hire LOI Global LTD for Phone Hacking Concerns

Concerned about phone hacking or bugging? LOI Global LTD, a leading private investigator agency in London, outlines the signs to watch for and why professional help is essential.

When to Seek Professional Help: Infidelity Investigations

LOI Global LTD offers professional and discreet private investigation services for those suspecting infidelity. Learn when to seek help and what signs to look out for.

How a Private Investigator Agency Can Help Recover Scammed Bitcoin and Cryptocurrency Assets: A Quick Guide

Learn how a private investigator agency like LOI Global LTD can assist you in recovering stolen Bitcoin and other cryptocurrencies. Expertise in digital forensics, global networks, and legal assistance.

The Importance of Due Diligence in Asset Tracing: A Comprehensive Guide

Discover the indispensable role of due diligence in asset tracing. This comprehensive guide delves into how due diligence complements advanced investigative techniques, offering a holistic approach to uncovering hidden assets.

Newsweek consults LOI about the disappearance and release of Monica De Leon Barba

Californian Monica De Leon Barba was kidnapped in Mexico and later freed. Expert insights from LOI Investigations Global LTD were featured in Newsweek. The case delves into the psychological toll of long-term kidnappings, challenges in foreign victim retrieval, and motives. Gavin Burrows adds personal experience.

Prince Harry’s Lawyers Allegedly Utilized Hacker Who Paid Private Investigators

Welcome to the LOI Investigations Blog! In today’s article, we delve into a recent news piece published on The Times website, which discusses the involvement of Prince Harry’s legal team with a convicted phone hacker and the use of private investigators. Please note that the original article requires a subscription to The Times. Let’s explore the details and implications of this intriguing story.

The Mysterious Disappearance of Levi Davis: Unveiling the Investigation

In the perplexing case of Levi Davis, a talented musician who mysteriously disappeared, questions linger about his sudden absence and the enigmatic events surrounding it. Despite months passing since his disappearance, unexpected Instagram activity and puzzling sightings have added intrigue to the investigation. As private investigators, we delved into the shadows, uncovering perplexing details that defy explanation.

Prince Harry’s Legal Battle Unveils Shocking Revelations of Hacking and Deception

Startling revelations have emerged regarding Prince Harry’s legal battles, exposing the involvement of Graham Johnson, a former journalist and admitted phone hacker. Johnson’s assistance to Prince Harry’s legal team raises doubts about his credibility, given his history as a “professional liar.” LOI Investigations, led by Gavin Burrows, is also implicated, prompting the need for transparency and ethical practices. This case highlights the pervasive issue of hacking and deception within the media industry.

Newsweek Consults Gavin Burrows about the Mysterious Disappearance of Julian Sands

Explore the case of Julian Sands’ mysterious disappearance. LOI Investigations offers expert insights into theories, search challenges, and body recovery complexities. Consulted by Newsweek’s Gerrard Kaonga, we unravel this enigma.

Building the Future

Have Achieved :

  • Home office full criminal record cleared all employees
  • CTC (Counter terrorism cleared)
  • Full Members of the Institute of Professional Investigators
  • Fully Insured and Certified.
  • Information Commissioner’s office (ICO)

Who We Are :

Line of Inquiry (LOI Global LTD) includes Sir Rupert Dewey, our Chairman who joined the firm in 2022. Our highly specialised team also includes a former lawyer who has amassed an impressive 40 years experience in practicing Law, and a former Ministry of Justice employee, Anne-Marie Harris, who specialises in government level enquiries. They decided to fill the investigation space under the same business umbrella in 2020 with the single goal of being the industry’s leading niche firm. In 2022, AG MBE, Bartomeu Palliser and John Bees as managing director joined the LOI Global Board. We are a group of highly experienced private investigators with top reviews, blending traditional trade-craft with modern investigations techniques.

We have an impressive network of Cyber Investigators (Government Level trained), former Police 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 offices in New york, Washington,  San Francisco, Los Angeles, Houston, Dallas, Florida,  Switzerland, Luxembourg and Dubai in the United Arab Emirates.
Our business is to get you the information you require discreetly undetectably and in strict confidentiality.

More About Us

We are a group of highly experienced private investigators blending traditional trade-craft with modern investigation techniques. Gavin Burrows Reviews are awesome & Gavin Burrows is firmly established as one of the United Kingdom’s and indeed, the world’s leading Private Investigator, Investigation Consultant, and all-round problem fixer.

The British Royal Family:

There have been many world-class successes, including when Gavin Burrows worked for the British Royal family and senior Police infiltrating a group who posing as staff at a polo match Planned to steal DNA from HRH Prince Harry. Prince Charles and Prince William were also attending. Liaising directly with senior police and Prince Charles private secretary Burrows thwarted the plot successfully.
High profile individuals, high net worth VIPs, celebrities and leading media law firms:
In addition, Line of Inquiry has assisted 79 A List celebrities and Royalty between 2019 and 2023,  in multiple successful law-suits, where in each case there have been successful settlements. Gavin Burrows was also commissioned to write a report, translated into every FIFA (Fédération Internationale de Football Association) member’s language on Press Intrusion, privacy and protection.
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Achieved Credentials

Line of Inquiry has contracted representatives who are licenced, if required in country whom are experienced, qualified, male and female investigators with the exception of Russia. We do operate and have contacts in these regions but do not have a Line of Inquiry contracted representative permanently in the country. A Line of Inquiry contracted representative can visit you at any meeting place of your choice to discuss your case in total confidence.

We Prosecute Fake Reviews & Any Third Parties Who Copy Clone Or In Anyway Copy (Any Content On This Website Or Act In Bogus Websites And Or Any Other Type Of Outlet As Gavin Burrows. Line Of Inquiry LOI)
We know how to legally trace emails, YouTube, Facebook, LinkedIn, and Instagram posts & comments, trace email and chat box enquiries.
Even if the spurious individuals are using VPNs. We can & we will assist in the prosecution of any fake reviews and we can assist you in doing the same whether you are a private individual, sole trader, SME or Corporate. We work closely with a leading London Lawyer and KC who specialise in this area and of course our own in-house Line of Inquiry Cyber Team.

Please call :
UK : 0800 1 939 333
Outside UK : +44 800 1 935 777

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