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



Private Detective Agency Preston

Private Investigators in Preston

We’re an independent, Preston-based private detective agency. We’re proud to offer services across North West England, as well as the whole UK. We’ve managed to build a solid reputation as one of the most reliable detective agencies in Lancashire, with listing us as one of their choices for the best private investigators in Preston.

As Proud Prestonians, we’re always happy to chat on the phone, free of charge. However, for safety and security reasons, we ask that you make an appointment before coming to visit us in person.



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.



Local Private Investigators All Over the World

Preston-Based with a Global Reach

We have a global reach, and we can expedite international cases in as little as 24 hours. Often an investigation will begin in Preston, but as we follow leads, it quickly becomes apparent that we need to look further afield. Whether your case takes us to Lytham St. Annes, The Lake District, or Luxembourg, we can get investigators on the ground to find out the truth and bring you the peace of mind that you deserve.

Although we’re Preston-based, we can guarantee service anywhere in The United Kingdom. If you’re based in the Midlands or the South of England, feel free to check out our offices in Birmingham and London.

Safe, Legal & Effective


Providing safe investigations will always be our number one priority. We never do anything that could put you, us, or anyone else in danger. We have a strict code of conduct, and we carefully vet all of our agents to ensure that they meet our high standards. Our detectives are fully qualified, registered with the relevant industry bodies and work tirelessly to make sure that all their work is safe, ethical, and responsible.


We provide bespoke services to businesses and private individuals. Whether in the Preston area or somewhere else, Private Investigations UK is always happy to chat. For free, friendly a advice, please don’t hesitate to give us a call.

Professional Investigations for Private Clients

Uncover the Truth

The people of Preston look to us for help with all kinds of personal problems, with cheating partner investigations being our most popular service. Some clients ask us to get evidence of marital infidelity because they need it for their divorce. Others want to find out the truth so that they can make informed decisions about their life.

At Private Investigations UK, we prioritise your goals to ensure that the evidence we gather is both usable and irrefutable. Our uniquely client-focused approach sets us apart from other investigation agencies, which sometimes lack the empathy needed to do the job well. Not only are we here to find out the truth, but we’re also here for you. With 24/7 service, we’re always available to offer advice and provide a shoulder to cry on if you need it.

We understand that no two investigations are ever the same, so we make sure we take the time to tailor your investigation to suit you. Of course, we’re proud to offer a team of highly trained and fully qualified private detectives, but that means nothing if we don’t provide you with the best service possible. 

Over the past 15 years, we’ve provided answers in hundreds of cases, from people tracing to child custody investigations. You don’t have to take our word for it; have a look at these testimonials from our many satisfied clients.

Corporate Investigation Services in Preston

Protecting Preston's Businesses

Since the industrial revolution, Preston has been a business hub and a key player in the global economy. Preston is moving from strength to strength as a powerhouse of The North. Last year, Lancashire County Council reported that over 5000 independent businesses operate in the city, with numbers increasing dramatically every year. Preston is far outpacing the rest of the county, but as companies build and grow in our town, so too does the need to protect them.

We’re committed to building a thriving business community in Preston, which is why we offer a variety of security and investigative solutions for your company. From premises surveillance to enhanced due diligence background checks, we can help you protect yourself from rogue employees and malicious competitors.

Our most popular corporate services are personal injury surveillance and our comprehensive online background check package. We also offer highly accurate private lie detector tests to assist with internal investigations. You’ll be able to take the test in your office or the relaxed environment of our office in the serene Preston Dockland.

We Understand Your Needs

What Sets PI UK Apart From Other Preston Investigation Agencies?

We find that some PI agencies are too cold and clinical in their approach. The investigators can get tunnel vision, without really listening to your needs. While collecting evidence is important, we think this approach can take away from the quality of service that you receive.


We’re client-focused, so we’ll make sure you get the results you want, while making sure you feel supported and understood. Please get in touch with us for friendly, professional advice and a free, no-obligation consultation of up to 30 minutes.


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.

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