Fast, Accurate, and Irrefutable Evidence – Guaranteed

Your Trusted Private Investigator in London

At National Private Investigators Ltd, we understand the importance of discretion and privacy when it comes to sensitive matters. To begin your confidential enquiry, simply provide your contact information below, and we’ll arrange your free consultation with one of our expert investigators.

National Private Investigators

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. They include:

Our Areas of Expertise

National Private Investigators offers a comprehensive range of services to meet your unique needs. Here are some of the areas where we excel

Private Investigation Services

Uncover the Truth Confidentially

Life throws curveballs, and sometimes you need the truth on your side. National Private Investigators, a trusted London-based agency, is here to help. Whether you suspect infidelity, have concerns about a child custody case, or simply need to locate a missing person, our team of experienced and professional investigators is dedicated to providing you with discreet and confidential investigations tailored to your specific needs.

We understand the emotional weight these situations can carry. That’s why we prioritize building trust and maintaining complete transparency throughout the investigation process. You’ll be informed every step of the way, while we work tirelessly to uncover the truth and protect your privacy.

Who we are?

At National Private Investigators, we’re a team of skilled investigators dedicated to providing discreet and comprehensive investigative services across the UK. Our team boasts experience, including ex-military personnel, ensuring we approach every case with the expertise and attention to detail it deserves.

Our Proven Approach

Free Consultation

During your free consultation, a licensed investigator will listen carefully to your situation, ask questions to understand your goals, and explain how our services can help.

Customized Investigation Plan

We don't believe in a one-size-fits-all approach. We'll develop a customized plan tailored to your specific needs, outlining the recommended course of action and estimated timeframe.

Transparent Pricing

Before we begin any investigation, we'll provide you with a clear breakdown of the associated fees. There are no hidden costs.

Discreet Investigation

Our investigators are experts in conducting discreet investigations. They will take all necessary steps to protect your privacy and confidentiality throughout the entire process.

Detailed Report

During your free consultation, a licensed investigator will listen carefully to your situation, ask questions to understand your goals, and explain how our services can help.

Expert Witness Testimony

Our team includes highly qualified investigators who can serve as expert witnesses in court if needed. Their experience and meticulous documentation can strengthen your case and provide valuable courtroom testimony.

Case Studies

Trust in our expertise. We prioritise ethical practices and the highest standards of professionalism in all our undertakings. We’re here to help and guide you every step of the way.


Proactive TSCM Service

A prominent property acquisition company, known for securing and developing high-value estates, had a strategic edge thanks to its ability to identify and close deals

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Private Surveillance Reviews

Our proven track record

Luke Annan
Luke Annan
I couldn’t be happier with the service with NPI. Very professional and everything was explained really clearly. Great work! Would highly recommend!
josh large
josh large
Fantastic !!! The work done by NPI was quick and the response and results and were hassle free. I got the results I needed and I was grateful of the judgment free professionalism they provided. Would recommend to anyone.
Ash Chap
Ash Chap
Very insightful, professional and knowledgeable - thank you so much.
Breaking Mad UK
Breaking Mad UK
Very Helpful! Awesome Stuff thanks!
Renna Ren
Renna Ren
Very professional. Great service! Thank you for the efficient and speedy service.
dylan hibbert
dylan hibbert
Essential Company when seeking due diligence on a recent merger.
Dorian Szymanski
Dorian Szymanski
Thanks so much for the help, great service
Becky Hilditch
Becky Hilditch
The person I spoke with was very helpful, friendly and professional. Highly reccomend using this very approachable judgement free company.
Kimberley Hatfield
Kimberley Hatfield
Brilliant service, thank you for all your help and assistance. Would definitely recommend!
Philip Kendall
Philip Kendall
National Private Investigators service was brilliant. Resolved my issue very quickly.
I'm very happy with the work provided from National Private Investigators. I would highly recommend their service. Thank you!
David G
London UK
Excellent service throughout, we were kept up to date on the investigation every step of the way. We couldn't have asked for more.
Lucy E
Cambridge UK
Amazing result! As a business, we've worked with a few companies over in the years, and NPI get the job done. Highly recommended!
Johnathan M
Greater London UK
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