The Story Behind the Science
DeceptionDetection.co.uk wasn't built in a boardroom. It was built from pain — from the lived experience of being lied to for over a decade, and an obsessive search for a way to find the truth that actually works.
Founded from Personal Pain
Every business has an origin story. Ours is more honest than most.
Mathew O'Neill
Founder & Director — DeceptionDetection.co.uk
For over a decade, Mathew O'Neill lived inside a lie. Not a small one — a sustained, calculated web of deception woven through a 12-year relationship that slowly eroded his confidence, his trust, and his sense of what was real. Like so many people in his situation, he had suspicions. Gut feelings. Moments where something just didn't add up. But he had no way to know for certain. No tool. No proof. Just doubt gnawing at him, day after day.
When the truth finally came out, it didn't bring relief — it brought obsession. Why is it so easy to lie to someone for so long? Why does every detection method seem so easy to beat? Mathew threw himself into the study of neurology and the science of deception — how the brain processes truth, how it betrays itself when it knows something it's trying to hide, and why traditional polygraph testing is so fundamentally flawed.
That obsession led him to a discovery that changed everything: the P300 EEG response. Unlike polygraphs that measure sweat and heart rate — signals easily disrupted by anxiety, medication, or a restless night — the P300 is a pure neurological event. When the brain recognises something it already knows, it fires an involuntary electrical signal approximately 300 milliseconds after exposure to a stimulus. You cannot fake it. You cannot suppress it. It happens whether you want it to or not.
Mathew didn't want this knowledge to stay in a research paper. He wanted it in the hands of real people — people like he used to be, sitting in silence wondering what was true. So he built DeceptionDetection.co.uk: a service that brings clinical-grade P300 EEG testing to anyone who needs the truth. Today the business operates with a team of 10 trained examiners covering the UK, and a growing franchise network bringing P300 technology to clients across the globe.
Why We Do What We Do
Every person who comes to us is where Mathew once was — trapped in uncertainty, desperate for truth. We built this business so no one has to stay in that place.
Born from Experience
Our founder lived through 12 years of sustained deception. This isn't academic for us — we understand the emotional cost of not knowing the truth, and we take that seriously in every test we conduct.
Science, Not Guesswork
The P300 EEG response is a peer-reviewed neurological phenomenon. We use the BrainBit 8-channel EEG system to capture involuntary brain signals that cannot be faked, suppressed, or manipulated.
Total Discretion
Every test is conducted in complete confidentiality. Your case, your results, your identity — protected at every stage under full GDPR compliance. No exceptions.
95% Accuracy
Our P300 methodology consistently outperforms polygraph testing, which carries a false positive rate of up to 40%. Results you can rely on — not shaped by anxiety or a bad night's sleep.
UK-Wide & Global
With 10 trained examiners across the UK and a growing international franchise network, we bring P300 testing to wherever you need it — at our facilities or yours.
Human at Heart
Behind every booking is a real story. We approach every client with care, patience, and zero judgement — because we know what it costs to finally ask for the truth.
The Journey
From one man's breaking point to a UK-wide service with global reach.
The Breaking Point
After 12 years of sustained deception in a personal relationship, Mathew begins an obsessive dive into the neuroscience of lying. Not for revenge — for understanding. How does the brain process and betray deception?
The Discovery
Mathew discovers the P300 EEG response — an involuntary neurological signal emitted by the brain when it recognises something it already knows. Unlike polygraph, it cannot be suppressed. The idea for DeceptionDetection.co.uk is born.
The Business is Founded
Mathew founds DeceptionDetection.co.uk under Dadlink Technologies Limited, invests in clinical-grade BrainBit EEG equipment, and builds the testing protocols that underpin every session. First real clients come through — each one a person who simply needs to know the truth.
Building the Team
Growing demand leads Mathew to recruit and train specialist examiners — building a team that shares his commitment to accuracy, discretion, and genuine care for every client.
UK-Wide Coverage
With 10 trained examiners operating across England, Scotland and Wales, DeceptionDetection.co.uk becomes a truly national service — with mobile testing bringing P300 EEG directly to clients wherever they are.
Global Franchise Launch
The franchise programme goes international. Partners trained to Mathew's protocols extend the reach of science-backed lie detection beyond the UK for the first time.
Still Growing
Thousands of tests completed. 4.9★ client rating. A global franchise network. And the same mission Mathew started with: giving people the truth they deserve.
Real Clients. Real Results.
Every review below is from a real person who needed the truth and got it.
S. K.
Manchester
"I'd spent months not knowing what was real. The P300 test gave me a definitive answer in under an hour. The examiner was calm, professional and incredibly sensitive to how difficult the situation was. I finally have clarity."
Verified Review — February 2025
T. R.
London
"Our HR team was dealing with a serious workplace accusation where the evidence was genuinely 50/50. The EEG results gave us an objective, documented basis to make a fair decision. Completely professional from start to finish."
Verified Review — January 2025
J. M.
Birmingham
"I was accused of something I didn't do at work and needed to prove it. The P300 results were clear and the certified report was taken seriously by my employer. Cleared my name. Cannot thank this team enough."
Verified Review — December 2024
P. W.
Leeds
"My partner agreed to take the test to save our relationship. The whole process was handled with so much care and sensitivity. The results were definitive and we're now rebuilding. Worth every penny."
Verified Review — November 2024
C. L.
Glasgow
"Our insurance investigation had hit a wall. We brought in DeceptionDetection and within the day had a clear, documented result. Far more reliable than the polygraph we'd used before."
Verified Review — October 2024
N. F.
Bristol
"I booked discreetly, they came to my location, and the whole appointment was done in under two hours. The examiner explained everything clearly and never made me feel judged. Outstanding service at the worst time of my life."
Verified Review — September 2024
✔️ Registered & Transparent
DeceptionDetection.co.uk is part of
DADLINK TECHNOLOGIES LIMITED
Company number: 16161444
Registered at: Chelford Road, Handforth SK9 3SQ
Officially registered in England & Wales • For your confidence and peace of mind
Ready to Find Out the Truth?
Mathew built this service because he knows what it feels like to not know. Whether you're dealing with relationship doubt, a workplace accusation, or a legal matter — our team is here. Confidential. Accurate. Human.