Full Services Private Investigation Agency
Independently audited 98.9% success rate (March 2026)
LOI Investigations is a Full Service Private Investigation Agency which specialises in all Private Investigation services, in Manchester, all of the UK and Worldwide. Our team includes both Male and Female Investigators who live in & 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, 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 complex.
Our Offices are locally staffed in 44 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
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 1 939 333
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.
FREE CONSULTATION
Infidelity Investigations
At LOI Investigations, we specialise in providing discreet and professional Infidelity Investigations to uncover the truth about a potentially unfaithful partner. Using advanced surveillance techniques, our Manchester-based investigators gather clear evidence, ensuring peace of mind and confidentiality. Contact us for a private consultation and tailored investigation service.
Missing Persons Tracing
Searching for a missing person in Manchester or beyond? LOI Investigations offers effective Missing Persons Tracing services to locate lost friends, family, or debtors. With cutting-edge technology and expert investigators, we handle every case with care and professionalism.
Surveillance Services
LOI Investigations provides high-level Surveillance Services in Manchester, led by an experienced team that includes a former military intelligence officer. Our mobile, static, and covert surveillance solutions use advanced technology to ensure accurate and discreet evidence collection, both locally and internationally.
Cyber Security Investigations
Our Cyber Security Investigation services offer protection against cyber threats, identity theft, and fraud. Using advanced monitoring techniques and dark web analysis, we help individuals and businesses in Manchester safeguard their digital presence and mitigate damage from cyberattacks.
Phone Tracing Services
LOI Investigations provides a fully confidential, GDPR-compliant Worldwide Phone Tracing service, covering registered, burner, and VOIP phones. Whether tracing a mobile or landline in Manchester or globally, we offer detailed reports with the highest level of discretion.
Social Media and Online Harassment
Our team specialises in tackling Social Media Harassment, including cyberbullying and online abuse. We use advanced technology and legal expertise to trace offenders and protect clients from digital threats in Manchester and across the UK.
Stolen Jewellery & High-Value Asset Recovery
LOI Investigations excels in Asset Tracing and Recovery, helping clients retrieve stolen jewellery, art, and other valuable items. With global reach and extensive local expertise in Manchester, we provide the best chance for recovering your high-value assets.
Genealogy & Family History Investigations
At LOI Investigations, we offer expert Genealogy and Family History Investigations in Manchester, helping you uncover ancestral roots or trace long-lost relatives. Whether you’re researching your family tree, seeking to find birth parents, or verifying lineage, our experienced investigators provide discreet services tailored to meet your specific needs.
Asset Investigator
At LOI Investigations, we specialise in Asset Investigations in Manchester, helping individuals, businesses, and legal professionals trace and recover hidden or misappropriated assets. Whether you’re dealing with divorce proceedings, debt recovery, or corporate disputes, our experienced investigators use advanced techniques like open-source intelligence (OSINT), public record searches, and deep web analysis to locate valuable assets such as property, bank accounts, and investments.
Blackmail Investigations
LOI Investigations provides tailored Blackmail Investigation services in Manchester. Whether you’re facing personal or corporate threats, our expert team uses the latest technologies and strategies to protect your reputation and prevent further harm.
Background Checks
For reliable Background Checks, LOI Investigations offers fast and thorough services for individuals and companies in Manchester. From pre-employment checks to criminal records, our team ensures confidentiality and swift results, protecting both personal and business interests.
Due Diligence Investigator
LOI Investigations offers reliable Due Diligence Investigation services in Manchester, providing essential intelligence for businesses considering mergers, acquisitions, or significant investments.
MORE DETECTIVE SERVICES
Fraud Investigation
LOI Investigations offers expert Fraud Investigation services in Manchester to help businesses and individuals combat financial misconduct. From corporate fraud to insurance scams, our dedicated investigators have extensive experience identifying fraudulent activities, gathering critical evidence, and supporting legal action. Whether you’re dealing with embezzlement, investment fraud, or identity theft, our team in Manchester utilises cutting-edge technology and in-depth knowledge to ensure a swift and effective resolution.
Corporate Investigators
Line of Inquiry offers a comprehensive suite of services tailored for businesses in Manchester. These include business intelligence, asset tracing, debtor tracing, and competitive intelligence. Specialised 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.
Commercial Investigations
LOI Investigations provides comprehensive Commercial Investigation services in Manchester to support businesses with critical intelligence. Our services include corporate fraud investigations, competitive intelligence, asset tracing, and due diligence for mergers and acquisitions. We also assist with employee background checks, intellectual property protection, and supply chain risk analysis.
Financial Investigation
Our Financial Investigation services in Manchester are designed to assist clients in uncovering financial irregularities, tracking illicit funds, and assessing overall financial risks. LOI Investigations specialises in detecting hidden accounts, fraudulent transactions, and money laundering schemes, providing comprehensive support to businesses, individuals, and legal teams. With a focus on accuracy and discretion, we help you navigate complex financial matters, ensuring you have the information necessary for informed decisions.
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
Lawyers
We at Line of Inquiry specialise 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. Utilising advanced technology and techniques, we work closely with legal teams to provide expert analysis and testimony, adhering to the highest ethical standards.
Global Offices
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
Our Credentials
- All employees hold full Home Office criminal record clearance.
- Full members of the Institute of Professional Investigators (IPI).
- Fully insured and certified for comprehensive investigative services.
- Registered with the Information Commissioner’s Office (ICO) for data protection compliance.
Who We Are
Line of Inquiry (LOI) boasts a global network of highly skilled professionals, including government-trained cyber investigators and specialist surveillance experts. Our team is supported by a wealth of well-placed contacts worldwide, ensuring comprehensive investigative coverage.
LOI’s head office is located at 5 Chancery Lane, London WC2A 1LG, right in the heart of the city’s legal district. We also maintain offices across the UK and internationally, including in Ireland, Monaco, Switzerland, Germany, the US (New York, Los Angeles, Washington, and more), Singapore, Hong Kong, Dubai, and Australia, among others.
Our mission is to provide you with the information you need in a discreet, undetectable, and fully confidential manner.
About Us
We are a team of highly skilled private investigators, combining traditional tradecraft with cutting-edge investigative techniques. Line of Inquiry (LOI) has earned its reputation as one of the world’s leading private investigation consultancies, known for solving a wide range of problems.
Our founder was also commissioned to produce a report on press intrusion, privacy, and protection, which was translated into all official languages of FIFA (Fédération Internationale de Football Association) member countries.
Line of Inquiry has contracted representatives in various countries, who are licensed where required and include both male and female private investigators. While we have contacts in Russia, we do not have a permanently stationed representative there. However, a Line of Inquiry representative can meet you at a location of your choice to discuss your case with complete confidentiality.
We actively prosecute fake reviews and take action against third parties who replicate, clone, or misuse content from our website, or pose as Gavin Burrows or Line of Inquiry in fraudulent activities.
Our expertise extends to tracing emails, YouTube, Facebook, LinkedIn, and Instagram posts and comments—even when VPNs are used. We work closely with a leading London lawyer and KC who specialize in this area, alongside our in-house Cyber Team, to assist in prosecuting fake reviews. Whether you’re a private individual, sole trader, SME, or corporate, we can support you in protecting your reputation.
Please call :
UK : 0800 1 939 333
Outside UK : +44 800 1 935 777
