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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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We get to wherever the information is



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

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.

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.

Family Law

Pre and post-divorce, lifestyle and financial investigations

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!

Nancy Chopra
Nancy Chopra
My issue has been resolved with upmost respect and understanding. These Private Investigators were very professional in helping me in my matter. I would suggest using LOI Global Ltd Investigation services to anyone.
Rash Bandercat
Rash Bandercat
They were very responsible. These Private Investigators in UK did everything they promised in a timely manner. They honored the price they quoted me and did not deviate even when the Private Investigation job had some changes. I trust this Private Investigation Company 100%.
John Buttler
John Buttler
Excellent Service. Polite, Friendly and Professional.
Jacob Trimble
Jacob Trimble
Brilliant Private Investigation Company. Would highly recommend to anyone looking to hire a private investigator. This firm really did go that extra mile to ensure I got the evidence that I needed. Fantastic - thank you so much for all of your hard work.

Private Investigator services since 1994

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. 

Leading Investigation Experts

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


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 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 – Gavin Burrows International 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 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

Chancery Lane In London
architecture background
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