Centre for Forensic Neuroscience · Northamptonshire
Lie Detector Test Northampton
Confidential polygraph examinations conducted personally by Dr Keith Ashcroft for relationship matters, disputed allegations, workplace investigations and legal instructions across Northampton and Northamptonshire.
Every enquiry is personally reviewed before an appointment is confirmed.
- Personally Conducted
- No Subcontracting
- Private Offices
- Confidential Review
- Written Reports Available
Confidential advice from Dr Keith Ashcroft
07790 732828No obligation · Strictly confidential · Personally conducted examinations
Confidential Appointment Request
Request an Appointment
Requesting an appointment does not commit you to proceeding with a polygraph examination. Every enquiry is personally reviewed by Dr Keith Ashcroft to determine whether the matter is suitable and whether the proposed issues can be examined fairly, accurately and ethically.
You can request a confidential lie detector test in Northampton online without first telephoning. An examination is not confirmed until suitability, consent, question formulation and practical arrangements have been reviewed.
Appointment Reservation
Appointments are secured with a £125 reservation retainer after the enquiry has been reviewed and accepted. It is a payment on account against the individually quoted examination fee and is credited against the balance due. It is not the examination fee itself: the total fee is quoted after the nature, scope and professional requirements of the instruction have been assessed.
Why Choose Our Northampton Lie Detector Test Service?
The Centre for Forensic Neuroscience has provided lie detector tests in Northampton and across Northamptonshire for over two decades. Our polygraph examinations are conducted to the standards of the American Polygraph Association (APA) and are led personally by Dr Keith Ashcroft — one of the most experienced forensic polygraph examiners in the United Kingdom.
Whether you are a private individual seeking clarity on a personal matter, a solicitor preparing a case, or an employer addressing a workplace concern, our Northampton service is designed to be thorough, discreet and professionally managed at every stage. We specialise in relationship and domestic matters, criminal defence assessments, and workplace investigations.
All examinations take place in a suitable, private venue within the Northampton area. In accordance with APA recommendations, we do not conduct polygraph tests in domestic settings.
Core Polygraph Services in Northampton
We provide specific-issue polygraph examinations for individuals, solicitors, employers, therapists and safeguarding professionals across Northampton, Wellingborough, Kettering, Corby, Daventry, Towcester and the wider Northamptonshire area. Every examination follows APA standards and a structured, transparent process.
Private & Relationship Matters
Confidential polygraph examinations addressing specific disputed incidents between partners, family members or associates. These assessments are investigatory in nature and provide structured, evidence-based information to support decision-making — they should be considered alongside other evidence and, where appropriate, professional counselling.
Learn MoreLegal, Criminal Defence & Solicitor Instructions
Solicitors, barristers and legal professionals can instruct the Centre for credibility assessments in criminal, civil, family and immigration matters. Cases involving allegations of sexual abuse are subject to enhanced procedures with two forensic polygraph examiners. Dr Ashcroft is qualified as an Expert Witness.
Learn MoreWorkplace, Corporate & Employee Theft Investigations
Polygraph examinations for private-sector employees under investigation for specific allegations of theft, fraud, misconduct, insider threats or breaches of trust. We also provide pre-employment screening for roles where trust and security are paramount.
Learn MoreSafeguarding & Post-Conviction Monitoring
We support safeguarding professionals through the child sex offender disclosure scheme and conduct post-conviction sex offender polygraph testing (PCSOT) in conjunction with therapists and probation officers. These examinations assist in managing risk to children and vulnerable adults and support treatment compliance in the community.
Learn MoreOur Commitment to Every Examinee
Preparation & Process
A transparent, step-by-step psychological assessment framework. We ensure all examinees fully understand the process, promoting maximum reliability.
Pre-Test Consultation
We review background case facts, confirm medical and psychological suitability, and explicitly discuss privacy, confidentiality, and consent boundaries before any testing begins.
The Pre-Test Interview
The most critical and comprehensive phase. The examiner thoroughly discusses every question to be asked during the exam. No surprise questions are ever asked.
Data Collection
Specialized, non-invasive sensors are attached to record biometric data (respiration, electrodermal activity, cardiovascular parameters) while the exact agreed-upon questions are asked.
Analysis & Report
The examiner analyses the physiological data using recognised forensic scoring methods. The findings are then communicated in accordance with the agreed scope of the instruction. Where a written report forms part of that scope, a confidential professional report is prepared.
Examinee Preparation Checklist
Not sure whether a polygraph is appropriate?
Not ready to request an appointment? Provide a brief outline of the issue and Dr Keith Ashcroft will advise whether the matter may be suitable for a polygraph examination.
Fees and Venue Guidance
How Fees Are Quoted
Fees are quoted individually according to the nature and scope of the instruction. Relevant factors may include case complexity, preparation and document review, question formulation, examination time, venue and travel requirements, reporting and professional follow-up.
A straightforward private examination may require a different scope of work from a legally instructed matter, therapeutic disclosure examination or workplace investigation. Differences in fees reflect the professional resources required by each instruction, not a different level of methodological rigour. Solicitor, employer and organisational instructions may also be quoted on a professional day-rate basis where appropriate.
The fee will always be confirmed in advance, after a short discussion about the circumstances, before any appointment is agreed.
Examination Venues in Northamptonshire
Examinations should be conducted in a suitable, private and controlled environment. We arrange neutral professional venues in Northampton and across Northamptonshire, including meeting rooms and clinic settings where appropriate.
In accordance with American Polygraph Association recommendations, we do not conduct examinations in domestic (home) settings, as it is rarely possible to control the environment to a satisfactory degree.
The venue, date and time are agreed between Dr Ashcroft and the instructing party during the initial consultation.
To receive a fee estimate, please contact us with a brief outline of the matter, preferred location and timescale.
Discuss Your CaseWhy Choose Dr Keith Ashcroft?
Many providers do not disclose the name or qualifications of the examiner who will conduct your lie detector test. At the Centre for Forensic Neuroscience, every polygraph examination in Northampton is conducted personally by Dr Keith Ashcroft, Principal Forensic Polygraph Examiner.
Named, Qualified Examiner
Dr Ashcroft is trained at American Polygraph Association–accredited and British Accreditation Council academies, including advanced training at the Behavioural Measures UK Polygraph Training Centre. You will always know who is conducting your examination.
Professional Memberships
Member in good standing of the American Polygraph Association, National Polygraph Association (USA), Director of the UK Polygraph Association, American Association of Police Polygraphists, the Society for Psychophysiological Research, and the Society of Forensic Interviewers.
Ethical Boundaries
All examinations must be voluntary. The Centre reserves the right to decline any instruction, and does not accept cases where coercion, threats or punitive motives are suspected. We are independent, impartial and objective.
Confidentiality & Suitability
Every case is pre-screened for medical, psychological and ethical suitability before any appointment is confirmed. Results and reports are handled with complete discretion. Dr Ashcroft is also qualified as an Expert Witness.
Lie Detector Test Northampton: Frequently Asked Questions
We specialise in providing specific issue examinations using only accepted protocols and standards for our clients in Northampton, UK, according to the American Polygraph Association and ASTM International (committee E52 on Forensic Psychophysiology). We employ strict quality control procedures, as well as using two examiners to confirm results. Our state-of-the-art computerised polygraph systems, such as the Limestone Paragon X Acquisition System, have a high-resolution 32-bit analogue-to-digital conversion for superior recording and analysis capability for all casework.
Learn More