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About Us

The UK's leading provider of DNA, Drug & Alcohol Testing that goes to incredible lengths for every client

Our Team

David Nicholson Managing Director

David Nicholson, a successful biotechnology entrepreneur founded DNA Worldwide Group in 2004 with the aim to transform the level of service provided and ensure true quality and care in the industry. 

With the complex scientific process of DNA and Toxicology testing in early 2000 clients were often left to fend for themselves, scrambling around to find places for samples to be taken and ending up with reports that did not make sense. David decided this had to change and set about to build a company with the highest quality laboratory testing, world leading experts and exceptional client support. 

In 2013 Eurofins Medigenomix Forensik GmbH adopted the trading name "DNA Legal" for Section 20 Court directed testing within the United Kingdom.  David has been working in close collaboration with Eurofins in the toxicology market.

Dr Salah Breidi Head of Toxicology

Dr. Salah Eddine Breidi is a forensic scientist and expert in forensic toxicology. Dr. Breidi is the Head of Forensic Toxicology at DNA Legal, he is responsible for the interpretation of forensic evidence including drugs and alcohol analysis.

Dr. Breidi works with an experienced team of lab technicians and scientists to provide the most sensitive and accurate results in the field of forensic science. 

Dr. Salah E. Breidi graduated from Kingston University in London as a forensic scientist. He was awarded his Master’s degree in forensic analysis. He also holds a Bachelor of Medical Laboratory Sciences degree from the University of Balamand. He was awarded a certificate from the Justice Rapid Response in conjunction with the International Association of Forensic Sciences (IAFS) to assists States, the United Nations system, as well as other international institutions such as the International Criminal Court (ICC). 

Accredited Certifications

ISO 27001:2013 - Information Security

ISO 9001:2015 - Quality Management

Cyber Essentials

ISO:17025 Laboratory Accreditations

ISO:17025 : 2017  Toxicology

Testing by Eurofins Forensik Chemtox for toxicology analysis.

ISO:17025 : 2017 DNA Testing

Testing by Eurofins Forensik Medigenomix for DNA analysis.


May I thank you and your colleagues for the efficiency with which this matter was handled.  We are very grateful for the speed with which you were able to organise sample collection and processing and the prompt delivery of these test results.

Eileen Connolly | Wiltshire Council

Overall, very professional service by all departments and individuals across your organisation. A type of service which can be described as first-class  Please, give my graduate and thanks to all your colleagues and co-workers for their professional and efficient service.

Private Account

I found the service to be very quick, professional and helpful and the team members that looked after my enquiry were very responsive.

Private Account