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DECEPTION DETECTION LAB (DDL)

FORENSIC LINGUISTIC INTELLIGENCEC

Getting to the Truth

At Deception Detection Lab (DDL) we harness proprietary Forensic Statement Linguistic Analysis (FSLA) techniques & technology to detect deception. This enables us to verfiy integrity in high-stakes communication and investigations. 

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TRUSTED BY LEGAL, INTELLEGENCE & CORPORATE RISK TEAMS

What is FSLA?

"Forensic Statement Linguistic Analysis (FSLA) is the scientific examination of written or spoken language to uncover meaning, intent, credibility, authorship & risk in high‑stakes situations."  Chris, Lead Analyst DDL

FSLA-1.0 SYSTEM ARCHITECTURE

The Standard of Linguistic Precision

The methods we employ draw upon peer‑reviewed research in forensic linguistics, authorship analysis, veracity assessment, discourse analysis, and phonetics. We also incorporate metadata analysis for a truly multifaceted intelligence approach.

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99+
STATEMENTS ANALYSED
100+
Empirical Precision. Defensible Evidence.
WAYS OUR TEAM HAVE DEMONSTRATED THE IMPACT OF FSLA

Decoding Statement Structure

Our unique FSLA methodology targets the structural DNA of language. By isolating micro-shifts in syntax and verb tense inconsistencies, we extract empirical evidence with scientific methods.

FSLA Benefits 

FSLA For
Legal Teams

LEGAL & CRIMINAL INVESTIGATIONS

Empowering investigative credibility and admissibility by identifying linguistic indicators of deception within witness statements and suspect interviews.

DISPUTES & EVIDENCE

FSLA for Disputes, Evidence & Admissibility. We provide technical precision for complex litigation where verbal behaviors require empirical certainty.

LEGAL FSLA & ROI
  • Reveals patterns in testimony

  • Save Billable Hours

  • Reduce time on weak claims

  • Successful court outcomes

RISK & INTERNAL INVESTIGATIONS

Mitigating internal fraud and organisational risk by uncovering deceptive structures in high-stakes corporate reporting and correspondence.

THREAT ANALYSIS

Intelligence for Risk, Deception & Internal Investigations. We identify investigative blind spots and mitigate security threats before escalation.

CORPORATE FSLA & ROI
  • Faster due diligence

  • Spots internal deception early

  • Accurate assessments

  • Scalable, defensible insights

FSLA For
Corporate Teams

DDL
Analysts

All of our Experts are trained in Forensic Statement Linguistic Analysis (FSLA) providing expert testimony and high-stakes risk assessment for law enforcement and legal counsel through advanced, peer-reviewed linguistic analysis.

Lead Analyst, UK

CHRIS WOODRUFF

Chris, our Lead Analyst, led the development of what we now term FSLA for multinational finance firms, emphasizing deception detection and source verification. He co-led AI-based credibility analysis and advanced LLM developments. As an expert in insurance fraud detection and voice-to-text modelling, Chris co-authored patents for Decision Engine technology and applied deep learning to credibility scoring. He now provides training and consultancy to a range of professional clients including law enforcement and psychology professionals.

EVAGENIA SARRI

Lead Analyst, GR

Evagenia Sarri is a skilled and seasoned Senior Practitioner in FSLA, featured in numerous Greek news programs and articles for her insights. Trained by renowned analyst Peter Hyatt, Jenny, along with our dedicated team, brings a wealth of expertise to every project, and we are fortunate to have her on board.

DDL Clients

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PROF. LAW & SENATE CANDIDATE

"Central to the credibility of my submissions, and the impact they achieved, was the work of DDL. DDL analysed a statement made by PwC’s executives in response to the revelations of wrongdoing. DDL’s analysis was ground breaking — and fatal — for PwC’s case, and their attempted cover up..."

DR ANDY SCHMULOW
University of Wollongong, AUS

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PARTNER, ODYSSEAN CAPITAL

"...We look forward to working with Chris and the DDL team again, and we have no hesitation in recommending their services to fellow analysts, fund managers, and investment allocators."

ED WIELECHOWSKI

Partner, Odyssean Capital, London, UK

Odyssean Capital

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FRAUD ADVOCATE & NETFLIX STAR

"Working with Chris and the team has genuinely been a pleasure...The way language reveals emotion, sensitivity and psychology has truly opened my eyes, and I find myself noticing it everywhere now."

AYLEEN CHARLOTTE 
UN Speaker & Author of the S.A.F.E Course

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Service Tiers

Core FSLA Review

Essential FSLA verification for primary intelligence.

£149

  • Single statement analysis

  • Indicators of Deception (IoD) report

  • *3-5 Day turnaround

  • Technical executive summary

Advanced FSLA
Audit

Comprehensive FSLA audit for multi-source files.

£1,250

  • Multi-source linguistic comparison

  • Syntax & verb tense mapping

  • *48-hour initial consultation priority service

  • Detailed analyst report with findings

  • Virtual strategy consultation

Comprehensive FSLA Intelligence Suite

Comprehensive FSLA audit for multi-source files.

£3,500

  • Expert testimony ready file

  • Metadata & acoustic phonetic analysis

  • *Immediate incident response

  • Full evidentiary briefing packet

  • Lead Analyst direct oversight

*Conditions apply.  

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LINGUISTIC LAB

12B George Street,
Bath BA1 2EH, Somerset,
England, UK.

PRIVACY POLICY / TERMS OF SERVICE

© 2025 Deception Detection Lab Limited (DDL)
FORENSIC STATEMENT LINGUISTIC

ANALYSIS & TECHNOLOGY

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2025 Copyright Deception Detection Lab Limited (company number 16105569) trading as DDL Ltd, is registered in England and Wales. Registered office address: 12B George Street, Bath BA1 2EH, Somerset, England, UK.   All rights reserved. ​​Disclaimer: Please note that whilst DDL are members of the IAFLL and the iIIRG, we are not regulated by the Financial Conduct Authority (FCA) and any actions taken as a result of our analysis remain solely the responsibility of the client and do not constitute legal or financial advice. 

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