We boast over 20 years of experience in intelligence gathering for clients all over the world.



We are a private investigative firm with a base of operations in Grantham, and we provide a wide range of services that are conducted in a manner that is both professional and discrete. It’s primary objective is to aid you in uncovering the truth. Our experienced team of private investigators is equipped with the knowledge, skills, and resources required to manage a wide variety of investigations, ranging from inquiries pertaining to personal issues to those concerning matters pertaining to businesses.

At private investigator Grantham we guarantee that the client’s privacy will be protected at all times by adhering to the highest possible standards of discretion and confidentiality during the length of the investigation. This is our commitment to our clients. Our private investigators Grantham carry out each and every investigation with the highest degree of professionalism and honesty, as well as in strict accordance with any and all laws and regulations that might be relevant to the case.

If you live in or around Grantham and are in need of a private investigator that can be relied upon and trusted, there is no need to look any further than our firm. Get in touch with our private investigation agency in Grantham as soon as possible to have a talk about your situation and to find out how we can aid you in acquiring the answers you seek. We are standing by and ready to take your call.


Is your husband or wife behaving strangely? PI UK can help.

We’ve spent the past 20 years perfecting our surveillance techniques. Find out how surveillance can help you.

We believe a successful marriage begins with an investigation. Make sure you know who you’re welcoming into your family.

PI UK’s relationship expert has put together a list of red flags to look out for in your relationship.

Divorces are always unpleasant, especially if things get messy. PI UK can help.

Our infidelity investigator answers every question you could have about looking into unfaithful partners.

Nobody wants to fight for the right to care for their child. Find out about how our services can help.

We’ve perfected our number tracing strategy. Find out who’s calling you with help from PI UK.

Hidden assets can be damaging for hundreds of different reasons. Read about PI UK’s asset searching services.

If you need to find out where someone lives, PI UK’s Address Finder can help. 

We specialise in uncovering the past. PI UK offers private background checks for businesses and individuals.

Due Diligence helps you to ensure that your company is safe when you make major decisions.

Why Choose PIUK Grantham?

Our private investigators have years of experience conducting investigations in a variety of sectors, including computer forensics, background checks, and surveillance, amongst others. We have worked with cases of all sizes and degrees of difficulty in the past, which has provided us with the knowledge and expertise required to properly finish the task at hand.

We are fully aware of the sensitive nature of the investigations that have been given to us by our clients, and we guarantee the utmost confidentiality in every investigation that we carry out. Our clients have placed their trust in us to handle their investigations because they know we will treat their information with the utmost discretion. We take extraordinary measures to ensure that any and all information is handled with the utmost discretion and secrecy, and we do it by exhausting every possible resource.

Our private investigators in Grantham are well aware of the fact that each investigation is one of a kind and requires a unique approach because of this. After gaining a comprehensive grasp of a client’s one-of-a-kind requirements and objectives through close collaboration with that client, the team on our end designs a bespoke research plan that is precisely adapted to fit the demands of the customer’s individual circumstances.

We make use of the most up-to-date investigation methods and technology in order to gather evidence in a fast and efficient manner. Our goal is to uncover the truth as quickly as possible. The members of our team have undergone training in a variety of advanced investigative techniques, such as computer forensics, GPS tracking, and other methods, in order to guarantee that the information we provide is as trustworthy and accurate as is humanly feasible.

We offer investigation services at pricing that are reasonable, and there are no hidden fees or other costs involved in any of our investigations or services. We conduct business according to the ideals of openness and equity in each and every transaction that we undertake.

Our private investigation firm in Grantham is committed to providing each and every one of our customers with the highest level of service and professionalism that is humanly feasible. Get in touch with our local private investigators in Grantham as soon as possible to learn more about the investigational needs you have and the methods in which we might be able to assist you in meeting those needs.

Safe, Legal & Effective


Most of our clients have never used a private detective Grantham can assist you whether you need assistance with a cheating spouse, a missing individual, or a corporate investigation. Contact us immediately to learn more about our offerings and how we can help you with your investigative needs. before, and we understand that it can be hard to divulge details about your personal life to a stranger. We’re here to make sure you feel as supported as possible, from your initial consultation to your final feedback. We have a professional but personable approach to our investigations to ensure our clients feel at ease.

If you’re interested in respectful, client-focused investigations, we’d love to tell you more. Give us a call for a friendly chat and free advice.

What Locations Do We Cover?

As a private investigator based in Grantham, our services primarily cover Grantham and the surrounding areas including:

Boston, Bourne, Cleethorpes, Crowland, Grantham, Grimsby, Horncastle, Lincoln, Skegness, Spalding, Stamford, Louth, and Mablethorpe.

Having said that, we are also able to extend our coverage to other regions according to the requirements of the client and the specifics of the investigation at hand.

Get In Touch With A Private Investigator In Grantham

You can get in touch with us via phone, email, or through our website if you need to speak with private investigator Grantham.

Our phone number is 0800 002 9858. You can call us during our business hours, or after office hours on 07730439156.

If you prefer to email us, you can send a message to We aim to respond to all emails as soon as possible, usually within one business day.

So please don’t hesitate to contact us if you require the assistance of a Private detective in Grantham. We are here to assist you in obtaining the data and supporting documentation you need to make wise decisions.



John provided my company a brilliant service. Surveillance was needed to check if an employee was really off sick or not. We were provided with a very professional and fast service, and a very clear, detailed report. This helped the company to obtain all the evidence that we needed. I Will definitely be using John again. Thank you.


The service i received was brilliant. Very professional and discreet. I had a feeling that my partner was cheating on me and unfortunately it turned out i was right. John was very sympathetic and was very helpful with all his good advise. He helped me get through a very tough experience. I will always be very grateful. Thank you John.


I can well recommend these services John was very committed and finally got my results. Whenever you need advice or someone to listen this man is dedicated and advises the way to go. Thank you John. I.can well recommend this company.


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