Because How You Get to the Truth Matters
About National Private Investigators – know you’ve the right expertise in your corner
- 24/7 Support From The Experts
- Have Transparency On The Process
- Know You Can Trust The Facts
Why Hiring The Right Private Investigator Matters
When something as critical as the truth is on the line, having confidence in the facts you’re presented with is imperative. You’ve lived with doubts for long enough. But the private investigation industry is unregulated and, unfortunately, flooded with ‘detectives’ who use dubious methods to gather evidence collected illicitly that won’t stand up in a legal setting. Some will even overcharge for unnecessary detection methods when simpler solutions could easily be deployed to gather the proof you need. You should be able to trust that your private investigator has your best interests at heart. With National Private Investigators you can.

How Do You Know You Can Trust Your Private Investigator?
At National Private Investigators, we know the decision to hire a private investigator often comes at a difficult time for our clients. It’s often not a decision that’s taken lightly. That’s why we try to make sure people have considered all the options before moving forward. The good news is you don’t have to rely solely on gut instinct when vetting your PI. There are a few ways you can verify whether they really are up to the job. First, confirm they are members of the following associations – the Investigators Institute of Professionals (IPI), the Association of British Investigators (ABI) and the World Association of Professional Investigators WAPI. The ABI is how we measure high quality, pride, and the utmost integrity within the world of private investigations. NPI is a proud member of all three of these associations.





Who Is The Best Private Investigator In The UK?
Measuring how good a PI is before hiring them isn’t always easy. But if the values of the private investigator match your own that’s a positive indicator they will be a good fit for your case. NPI prides itself on its ethical approach to detection. We are a professional team who care deeply about the rules and regulations of our work. NPI is a legitimate business with a strict code of conduct. We are fully compliant with confidential data processes and our specialist private investigators have worked at a top level in the British military. Everyone is highly aware of the complexities surrounding the world of private investigations and surveillance so you can rest assured your case will always be in the very best hands.

London’s Highest Google-Rated Private Investigation Agency. Trusted by Those Who Demand Absolute Discretion and Results
Our proven track record
EXCELLENT Based on 98 reviews Posted on Shannon HyltonTrustindex verifies that the original source of the review is Google. 10/10 would recommend. Report was sent back within 48 hours. Even with an incorrect name, the team at National Private Investigators were still able to pull up the information of who I was searching for!Posted on Cyan HendersonTrustindex verifies that the original source of the review is Google. I contacted jack and within half an hour he was able to provide me with the information I needed. I would highly recommend him! Great service!Posted on Daniel GroveTrustindex verifies that the original source of the review is Google. NPI helped me out with some private investigative work in relation to a pretty horrible crime that was being prosecuted. They were very considerate of many of our concerns, walked us through the options and put us in direct contact with their field ops. The work they did helped us make decisions in regards to potentially costly and lengthy litigation in one country and provided us with supporting evidence for a criminal case in another country. Importantly they weren’t trying to rip us unlike the various cloak and dagger services that posture as MI5 BlackRock adjacents.Posted on Krisztina NémethTrustindex verifies that the original source of the review is Google. I highly recommend National Private Investigators for anyone seeking a reliable, professional, and honest private investigation service in the UK. From the very beginning, communication was clear and transparent — they explained exactly what kind of information could be accessed, what results could be expected, and within what timeframe. Everything was delivered as promised, on time and at a fair price. The work completed was thorough, precise, and extremely useful for my situation. Even after the case was closed, their newsletters have remained interesting and educational, demonstrating their extensive experience and ethical approach to investigations. I am truly grateful for the professionalism and dedication of National Private Investigators, and I would not hesitate to recommend their services to others.Posted on Rob LeslieTrustindex verifies that the original source of the review is Google. We needed to trace a very slippery character who owed us a considerable sum of money and was moving locations to avoid being served court papers. Jack and NPI found him in a couple of days and confirmed he was living at the location. Highly recommend their services. Plus, the cost was extremely reasonable. Big ticks in every box from me!Posted on Luigi NoccoTrustindex verifies that the original source of the review is Google. This is the first time I've needed the services of a detective. Following an accident, I suffered for a long time and found myself helpless. I had a good intuition, so I shared it with Jack as input for an investigation. The investigation was a great success. The information I gained was invaluable. I was impressed by the level of expertise demonstrated. I recommend him to anyone in need.Posted on Rebekah ManfieldTrustindex verifies that the original source of the review is Google. Really helpful and quick! I needed to find a company address for a debt that I was owed, so that I could serve papers from the court. They were so professional, thorough and explained the process. A reasonable price and offered a guarantee. Thank youPosted on S.ATrustindex verifies that the original source of the review is Google. Never thought I would have to use such a service and was quite apprehensive but Jack was honest, helpful and professional. The service was excellent and ultimately protected my family. I will be forever grateful. Worth every penny. My only regret is not reaching out sooner. Thank you and sending good wishes to you and your businessPosted on G WTrustindex verifies that the original source of the review is Google. My wife was very recently on a business trip to London, and although British nationals, we currently live in Germany. A situation arose that was incredibly sensitive and distressing for my wife when in The City, and needed a rapid response. In addition to some unknown 'moving parts', the situation involved a police and crime report, however given the realistic nature of the Met Polices resources and priorities, it was almost certain that the time critical issue we were facing would not be addressed. I felt helpless, being in a different country, and contacted National Private Investigators via their Whatsapp contact function. It was a Sunday, so my expectations of a speedy response were limited. However; I was completely wrong. I had summarised the issue in the message, and was contacted by the Managing Director in person. He told me he had read the situation, and understood immediately the need for a speedy interaction with the incident. He gathered more detail from me, and reached out to his network, sourcing a highly experienced security professional, who specialised in the area of concern. Details were taken, a plan was developed, people were mobilised, and things happened! The professionalism, knowledge base, and calming manner in which NPI dealt with this matter were nothing short of outstanding. The issue was dealt with swiftly, discretely, and with military precision. NPI are the absolute real deal. Thank you!Posted on Kristine MaTrustindex verifies that the original source of the review is Google. A year ago, I received professional assistance from National Private Investigators and it made a real difference for me. At that time, I left a 5-star review on their website, but since that page is no longer available, I want to leave another one here to express my gratitude. Their service was discreet, efficient, and highly reliable. I truly appreciate the support I received and would not hesitate to recommend them to anyone in need of professional investigation services.Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
What Should You Look For In A Private Investigation Company?
If you’ve never hired a private investigator before, it can be difficult to know what questions you should ask before hiring them. Essentially they should be focused on getting the best outcomes for you. At National Private Investigators we make sure people have complete confidence in our service by making the following commitment to our customers:

Private Investigation Services
Tracing Agents
Trusted people tracing agents in London offering discreet searches, ID checks, address lookups, phone sweeps & more. Fast, reliable results from professionals.
Background Checks
Our background check company in London, UK provides a discrete people checking service. Background checks in the UK which leave no footprint.
Asset Investigation Services
Need someone to conduct an asset search? National Private Investigators provide expert Asset Investigation Services for individuals and businesses nationwide.
Tracing Agents
Trusted people tracing agents in London offering discreet searches, ID checks, address lookups, phone sweeps & more. Fast, reliable results from professionals.
Background Checks
Our background check company in London, UK provides a discrete people checking service. Background checks in the UK which leave no footprint.
Asset Investigation Services
Need someone to conduct an asset search? National Private Investigators provide expert Asset Investigation Services for individuals and businesses nationwide.
Private Surveillance Services London & UK
Surveillance services in London & UK. Our private surveillance investigators monitor companies & individuals in the UK. Get in touch today.
Fraud Investigators
Looking for fraud investigators in London? Our experts at National Private Investigators provide comprehensive fraud investigation services. Contact us today.
Corporate Investigations
Trusted corporate investigators in London, specialising in surveillance for fraud, theft, false claims, and workplace misconduct. Contact us for discreet results.
The Ability To Uncover The Real Truth Lies In The Strength Of Your Investigation Team
The quest for the truth often requires specialist expertise and equipment. That’s why we have assembled a highly skilled team of more than 40 world-class surveillance operatives across the UK to focus on specific detection techniques. Our team is headed up by Jack Charman, founder and chief investigator at NPI.
Jack is an ex-army reconnaissance soldier, experienced in covert surveillance and all areas of intelligence gathering. His time in the army has given him a wealth of experience and knowledge which has equipped him to gather an outstanding team for National Private Investigators.
“In the army, our job was to get in close to gather intelligence on enemy forces – this included everything from enemy numbers and weapon systems to morale and supply routes. When we had all the desired information that could have been gathered, our team would extract undetected to present the intelligence back to our chain of command. The skills and techniques gathered in this pressured role in the most extreme environments enable me to lead our team and operate at the highest level for our NPI clients now, gathering essential facts and evidence they can rely on 100%.”


Special forces trained, Paul leads our bug detection team who deploy a range of surveillance techniques using highly sensitive Government-grade detection equipment. Paul’s team stay at the forefront of detection technology to ensure they can carry out exhaustive bug sweeps that will uncover even the most sophisticated listening devices. Techniques includes thermal imaging, RF detection, Volt detection, non-linear junction detection, spectrum analysis and wide band detection.

When a job requires discreet surveillance we need equipment that will allow us to be in close range of our target without exposing our activity. Steve, our very own ‘Q’, is a master of covert detection devices, who develops a range of camera and tracking devices that can easily be concealed while evidence collection takes place. Unlike equipment that can be obtained on the mass market, our devices are designed with extended battery life and pinpoint accuracy. Ex-military, Steve is a self-confessed technical geek who deploys the latest equipment and detection techniques to ensure high-quality evidence is gathered.

The former counter-terrorism officer uses a state-of-the-art ‘Eye Detect’ device to detect minuscule movements in the eye. This technique eradicates room for human error or misinterpretation that traditional lie detection methods are susceptible to. Our lie detector tests can return accurate results within 10 minutes of testing.

Aaron heads up our tracing and background check services for desktop investigations and uses a range of databases and software to delve deep into the data collection on the target subject to trace up-to-date details required by the client. Our checks go way beyond the obvious and, if required, we follow up with pretext enquiries to confirm the evidence we have gathered beyond doubt.
At National Private Investigators (NPI) We Get the Answers Beyond Your Reach
We uncover the truth. We work with corporate, insurance and individual clients to deliver the evidence you need to protect yourself and make the right decisions. Armed with accurate, comprehensive and reliable information from many different sources, you’ll have the conclusive proof you’ve been looking for. We employ a range of different evidence-gathering tactics and techniques to get the results you need, fast.

Need The Real Truth?
- Contact us
Get in touch for a FREE, no obligation, confidential consultation. Share your situation, the challenges you face and the goals you want to achieve from your investigation.
- Set the strategy
We will recommend a bespoke strategy and tactics for your case, drawing from our broad range of services. We provide clear pricing and agree your plan before moving forward with the investigation..
- Get the intel
We will recommend a bespoke strategy and tactics for your case, drawing from our broad range of services. We provide clear pricing and agree your plan before moving forward with the investigation.
Can You Afford To Choose The Wrong Private Investigator?
Contact National Private Investigators today. You deserve to know no stone has been left unturned and have absolute confidence in the evidence put before you. In the meantime, download our guide Your Data In The Shadows – See What The Dark Web Is Sharing About You to find out just how vulnerable you are right now. Discover the tactics investigators use to drill down into background and identity checks. And for the proof – and the peace of mind – you deserve, book a call with one of our investigators today.
