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Private Investigators UK

Welcome to PI-UK! We are leading Private Investigators in the UK and offer nationwide coverage across the UK and beyond through our extensive network of experienced local investigators.

We strive to maintain the highest standard of professionalism and integrity in all our investigations. Our team is committed to delivering thorough and unbiased results, ensuring that our clients receive the comprehensive and reliable information they need. Rest assured, our top priority is your satisfaction and peace of mind.

Our experienced detectives work across all areas of the UK and even overseas in many cases. Our customer service is second to none and our global experience places us as an industry leading detective agency in the UK.

If you would like further information or to request a quote, then just fill out our contact form. Please include as many details as possible with your initial inquiry (such as the service required and post code) so that we are able to understand your circumstances and guide you appropriately. Please ensure that you enter a valid e-mail address so that we are able to respond.

Contact one of our experienced team members today: We offer free quotes for all work and all contact with us is strictly private and confidential.

Our services

Infidelity investigations

Do you suspect that your partner might be cheating on you? Our experienced detectives can check and verify if this is the case.

Process serving UK

Our agency can be trusted to serve documents and paperwork across the length and breadth of the United Kingdom.

Background checks

We offer comprehensive background checks for companies and private individuals across the UK.

Business due diligence

If you are doing business anywhere in the UK then it often makes sense to perform due diligence. We can help.

People finder service

Need help to find someone? We can help to locate people all over the UK with our industry leading people finder service.

GPS tracking service

Do you need a GPS tracking device to be installed on a vehicle in the UK? We can help.

Bug sweeping

Do you suspect that your home, car, or office might have been bugged? We can help by sweeping your property for bugs.

Secret shopper service

Do you own a business in the UK? We can help to check your employees as part of our mystery shopper service.

The UK's leading detective agency

Private investigator taking photos from a car Primarily working with former law enforcement (police) and military personnel, there are few as well versed in surveillance and social engineering tactics in the UK. Our agents cover the length and breadth of Britain, from Edinburgh to London and everywhere in-between, we are trusted to provide discreet services for our clients in all areas and most environments.

We believe that local knowledge and experience are key in succeeding with private investigations. Our network includes experienced, local detectives working in all key regions and areas across the UK. This enables us to offer a discreet and effective service in most environments and areas of England, Scotland, Wales & Northern Ireland/ROI, Europe, and beyond.

A magnifying glass and a laptop computer

We realize that many of our clients have never instructed private investigators to work for them in the past and might feel apprehensive about getting in touch with us. We believe that a good private investigator should always listen and understand the clients' needs in each respective case.

We would invite anyone that is apprehensive to contact us regarding their circumstances for a free, no pressure quote. If we feel that we’re able to help, we will let you know and it will then be a matter for yourself to decide whether or not you’d like to go ahead with our service.

If you need help from a UK private detective that is local to your area then please send a message through our secure website and we will endeavour to respond as soon as possible.

Client testimonials

I don’t usually post reviews but I just wanted to say a massive thanks again for the work which was completed on my behalf. I was faced with divorce proceedings from my adulterous ex-wife, PrivateInvestigators-UK were able to gather the evidence that I needed in order to prove that she had a new partner. Without the images that were taken I would have been in a much weaker position. I can say that the money I have spent I have made back more than 1,000 fold. The evidence was collected quickly and I was given regular updates. The tactics and techniques used were ingenious and she had no idea that she was being watched until it was too late. I would recommend this service to anyone, thank you again.

— Michael D, Nottinghamshire

I can’t thank PrivateInvestigators- UK enough for the work they did tracing my biological mother. I had spent so much time trying to find her myself that I thought it was probably going to be impossible. After I decided to get professional help and open a case, I was stunned to receive all of the information that I asked for in less than one hour. What a great service. My only regret was not seeking professional help sooner.

— Mia, Southampton

Thank you for a superb service. The quality of evidence gathered far exceeded what I had hoped for, and it took less time than we had budgeted for which was another added bonus. The investigator used a “discreet” camera to capture video evidence at short range, watching the video back felt like we were in the room. The footage is very clear. I would not hesitate to use this firm again for any type of investigation.

— Oliver Nicholls

PrivateInvestigators-UK supported me through a difficult time in my life whilst my partner was having an affair. Had I not hired an investigator I would never have found what was going on behind my back. I was kept up to date throughout the investigation and all of my questions were promptly answered. I felt that the investigator knew what they were doing and that they were able to gather the best possible evidence under the circumstances. I would not hesitate to use this company again and would recommend them to anyone.

— David C, Cambridgeshire

Our team keeps you in touch throughout the case through regular person to person contact.

Our team of experts are specialized in every form of investigation and will ensure that you are in the best possible hands.

UK network map

You can instruct us with the knowledge that all contact with our agency is strictly private and confidential.

Industry leaders
Rest assured that our team will provide you with a world class service that is truly second to none.


With over 100 collective years experience in the British detective industry, we can help no matter your reason for starting a case.


Remaining undercover at all times is key. We will work discreetly to uncover the truth in your case.

Highly Recommended

Our clients are at the heart of everything that we do. This is why our detectives are some of the most highly rated in the UK.

Don't wait for answers, get them today

Please feel free to get in touch with us if you require our help. We offer free quotes for all work.

Contact us