Centre for Forensic Neuroscience · Henley-on-Thames
Confidential polygraph examinations are available by prior appointment in a private professional office in Henley-on-Thames.
Every examination is personally conducted by Dr Keith Ashcroft, Investigative Psychologist and Principal Forensic Polygraph Examiner.
Appointment only · Suitability reviewed before acceptance · No walk-in service
Confidential Appointment Request
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 Henley-on-Thames online without first telephoning. An examination is not confirmed until suitability, consent, question formulation and practical arrangements have been reviewed.
Appointments are secured with a £125 reservation retainer after the enquiry has been reviewed and accepted. Payment instructions are provided with the appointment confirmation. The reservation retainer is deducted from the final examination fee.
A Thames Valley Appointment Option
Henley provides a discreet Thames Valley option for people who prefer not to travel into central London or Oxford. The examination takes place in a neutral professional office, away from the examinee's home or workplace, with the practical arrangements managed directly by the Centre for Forensic Neuroscience.
Each enquiry is reviewed individually. The proposed issue must be suitable for a polygraph examination, capable of being framed around defined factual conduct, and supported by informed and voluntary participation. Submitting an enquiry does not confirm an appointment, and CFN may decline a case following its suitability, ethics or safeguarding review.
Appointment Only
Confidential polygraph examinations can be arranged by prior appointment in a private professional office at The Henley Building on Newtown Road, Henley-on-Thames.
CFN books a private professional office only when a confirmed examination requires it. The location is not a permanently staffed CFN branch, office or registered address, and there is no walk-in polygraph service.
Clients must not attend without a confirmed appointment. Practical arrival instructions are provided after the appointment is reserved. Regus reception cannot provide clinical, case or polygraph advice; all case communications must remain directly with CFN.
The examination is conducted by the Centre for Forensic Neuroscience, not by Regus. Regus does not recommend, refer, supervise or endorse the service and takes no responsibility for its conclusions.
The venue advertises on-site parking and wheelchair accessibility. Clients with specific access requirements should inform CFN before booking so that the arrangements can be confirmed for the particular appointment.
The Henley setting is intended for clients who need a privately managed appointment and a neutral location within the wider Thames Valley.
People already working with a therapist may enquire about therapeutic disclosure, maintenance or monitoring work, including within a compulsive sexual behaviour recovery programme. The polygraph is an independent assessment procedure, not treatment.
Couples and private individuals may seek a structured examination of a clearly defined factual dispute where consent is voluntary and the purpose is constructive rather than punitive.
Solicitors, safeguarding professionals and other representatives may instruct an independent examination of a defined account or allegation, with reporting and liaison agreed in advance.
Business owners, employers and professionals dealing with theft, fraud or disputed misconduct may prefer a neutral office away from their organisation, home or usual workplace.
A therapist may provide relevant background information or attend an appropriate part of the process when authorised and professionally useful. The examination remains independently conducted by CFN, and therapist involvement does not alter the numerical scoring or conclusion.
Structured Therapeutic Purpose
Therapeutic polygraph work may be used as one component of a wider treatment or recovery process. It should have a clearly defined therapeutic purpose and be coordinated thoughtfully with the work already being undertaken by the client, partner and therapist.
CFN distinguishes the purpose of the instruction before questions are developed:
Examines whether defined conduct has been omitted from a prepared therapeutic disclosure, within an agreed scope and period.
Addresses a particular disputed event or behaviour rather than attempting to verify a person's entire history or character.
Reviews defined conduct during a specified maintenance period after a disclosure or within a structured recovery plan.
Considers compliance with clearly stated recovery boundaries during an agreed period, where the purpose is proportionate and appropriate.
A therapeutic polygraph does not diagnose compulsive sexual behaviour, replace therapy, determine whether a relationship should continue, or provide treatment for trauma or PTSD. It requires informed, voluntary participation and a scope that is capable of fair examination.
Where a partner has requested the examination, the examinee must still consent freely. Coercive, retaliatory or unsafe circumstances may make the instruction unsuitable.
Relationship examinations are accepted selectively. The matter must concern defined factual conduct, not a demand for general reassurance. Depending on the case, a suitable scope might consider whether a person engaged in specified contact, used identified platforms during a defined period, omitted defined conduct from an agreed disclosure, or breached a clearly stated behavioural boundary.
The relevant questions are developed only after the circumstances and source information have been reviewed. Questions about feelings, intentions, attraction, future behaviour or whether somebody is being completely honest may not be suitable.
Read about relationship polygraph examinationsCFN accepts instructions from solicitors and other professional representatives to examine a defined account or statement. Instructions may also relate to theft, fraud, disputed workplace conduct, safeguarding concerns or another clearly bounded factual issue.
The intended use, disclosure arrangements and reporting format are agreed before the examination. Polygraph results should be considered alongside other available information; they do not determine guilt, innocence or legal fact, and this page makes no claim of automatic court admissibility.
Every accepted examination follows a structured and transparent process, from initial case review through analysis and reporting.
Dr Keith Ashcroft conducts every examination personally. There is no subcontracted or anonymous examiner.
Case suitability, purpose, voluntariness, ethics and safeguarding issues are reviewed before acceptance.
A structured pre-test interview is completed and all relevant questions are discussed and agreed before data collection. There are no surprise relevant questions.
Advanced computerised physiological instrumentation is used, followed by evidence-led numerical analysis of the recorded data.
Same-day verbal feedback is provided where appropriate, with written reporting when requested, required or agreed.
CFN has experience with therapeutic, private, workplace, safeguarding and professionally instructed examinations.
The stages are explained before the appointment so that the examinee understands the purpose, scope and procedure.
The circumstances, proposed issue and intended use of the examination are reviewed.
The relevant questions are developed, explained and agreed before recording begins.
Responses are recorded using advanced computerised physiological instrumentation.
The recorded data are numerically evaluated, followed by verbal feedback and written reporting where agreed.
A specific-issue examination will ordinarily address no more than three carefully formulated relevant questions. Multiple unrelated allegations may require separate examinations. Read more about polygraph question formulation.
Fees are confirmed before an appointment is reserved. The quotation depends on the nature and complexity of the instruction; preparation, venue, professional liaison and reporting requirements may affect the amount.
There is no charge merely to submit an initial enquiry. An accepted appointment is normally reserved with a £125 reservation retainer, which is deducted from the final examination fee.
No fixed Henley examination price is published because materially different instructions should not be quoted as though they involve the same preparation and professional work.
The Henley venue can serve clients from the town and nearby parts of Oxfordshire, Berkshire and Buckinghamshire. It may be particularly convenient for people travelling from Marlow, Twyford, Wargrave, Sonning, Reading, Wallingford, Nettlebed, High Wycombe and Maidenhead.
Clients who need a different appointment area can review the established pages for Oxford, Reading, London, the South East or the wider UK service.
Clear answers about the venue, suitability, therapeutic work, fees and appointment arrangements.
Page content last reviewed: August 2026
Every examination is personally conducted by Dr Keith Ashcroft. Submit a brief enquiry for an individual suitability review before any appointment is confirmed.
Related Appointment Locations
Dr Keith Ashcroft, Principal Forensic Polygraph Examiner, can review whether a polygraph examination in Henley-on-Thames is appropriate for your situation. Leave your details and we will contact you confidentially.