What factors determine the price of a polygraph test?

The cost of a polygraph examination in London is determined individually, based on the unique complexity of your case. We are fully committed to pricing transparency: the fee agreed upon initially covers the entire procedure, without any hidden costs or unexpected charges.

Key components that determine the pricing:

• Complexity and context of the investigation: Private cases (such as resolving fidelity suspicions or domestic issues) often require highly customised protocols, whereas commercial investigations (loyalty audits or internal fraud) may involve analysing multiple parallel scenarios.
• Number of relevant questions asked: To achieve maximum accuracy (typically 90–98% on single-issue tests), an optimal test should contain a strictly focused set of specific questions (usually 3 or 4 critical questions). Artificially increasing the question count can dilute the subject's reactions and requires recording multiple additional charts, which impacts the fee.
• Number of individuals being examined: For businesses requiring batch testing (e.g., assessing multiple employees regarding a theft or performing periodic integrity checks for sensitive positions), we provide highly advantageous volume discounts.
• Type of final reporting required: Drafting an official Polygraph Expert Report conforming to strict judicial-grade standards, usable as an investigative aid for legal matters, requires comprehensive forensic analysis.

What does our standard fee cover?

Whichever package you select, the price fully covers all our professional services to ensure you receive a thorough, modern examination:

• Specialist pre-test consulting to evaluate whether polygraph testing is suitable for your situation.
• The complete pre-test interview (formulating questions and explaining how the system works).
• Active chart recording using internationally certified sensors.
• In-depth chart analysis and the compilation of the official expert report.
• A binding commitment to confidentiality and professional secrecy, in line with UK GDPR.

We are here to help you select the most effective solution for your case. For a confidential, personalised price quote, please get in touch with us.