J P French Associates

The UK’s longest-established independent forensic speech and audio laboratory with an unrivalled reputation giving evidence in the UK and overseas.

We provide expert evidence in forensic voice comparison analysis, transcription, authentication, and audio enhancement, as well as a number of other forensic speech and audio services. We have specialised experience producing reports and giving evidence in the UK and internationally, and we work for both prosecution and defence. We provide advice and training services to law enforcement agencies and lawyers across the world.

Our Services

Speaker Comparison


Questioned Utterance Analysis

Speaker Profiling



Speech Content Analysis

Digital Audio Services

Specialist Training


CPD Courses


Our Promises


All our staff provide the best standard of service, working to a quality management system.  Our focus on quality extends to our relationship with clients which we have nurtured for over 35 years.


Having a team of experts means that we can provide a faster service, as well as being able to estimate and assist with urgent cases or deadlines.


Our prices are competitive and include quality control and checking. We offer an initial assessment on price and can discuss working to determined budgets as required.


We prioritise the highest measures of security to ensure the confidentiality and continuity of material is always maintained.

Speak to our team of experts