Services
Forensic Drug Evidence
Forensic drug evidence plays a key role in investigations and prosecutions involving controlled substances, where questions of identity, quantity, purity, and interpretation of analytical findings may be central to the issues in dispute.
At Forensic Access, our forensic drug experts provide independent, impartial evaluation and expert opinion on drug evidence in cases where the conclusions reached by laboratories or investigators may be contested, multidimensional or pivotal to the case. Our specialists ensure that analytical findings are properly understood and interpreted within a legal and scientific context that is suitable for court.
Types of Forensic Drug Evidence Case Instructions

Our forensic drug experts are instructed in a wide range of cases where controlled substance evidence is central or disputed.
We are commonly instructed in matters involving:

Analysis and interpretation of controlled substances in possession, supply and importation cases

Disputed identification of novel psychoactive or emerging substances

Cases where quantity and purity influence sentencing or legal classification of an offence

Evaluation of methods used by laboratories and their suitability for the evidence presented

Assessment of issues relating to sampling, contamination or chain of custody

Cases involving mixtures, low-level detections or ambiguous analytical results

Historical cases or cold case reviews involving legacy drug evidence

Cases where the absence of expected drug evidence is itself relied upon or contested
Our experts work closely with legal professionals to ensure forensic drug evidence is considered in its proper scientific and contextual framework, with alternative interpretations explored where appropriate.
Forensic Drug Evidence Services

Our forensic drug experts provide independent evaluation and expert witness services across all key aspects of controlled substance analysis and interpretation.
Our services include:

Review and interpretation of forensic drug analysis results

Critical appraisal of laboratory reports and methods

Independent assessment of analytical approaches used for identification and quantification

Evaluation of issues relating to sampling, contamination and integrity of exhibits

Assessment of purity, mixture composition and relevance to forensic propositions

Interpretation of results involving novel psychoactive substances and new compounds

Advice on the limitations and reliability of analytical findings

Expert witness reports, case conferences and attendance at court
Expert Reports, Reviews and Defence Case Support

Forensic Access prepares independent expert reports and case reviews for use in forensic investigations and legal proceedings.
Our forensic drug experts are instructed to review and critically assess drug evidence, laboratory methods and conclusions obtained by the prosecution, and to advise on evidential strengths, weaknesses and alternative interpretations at all stages of a case.
Each instruction is managed by our dedicated casework team, who work closely with legal professionals to scope instructions, coordinate expert input and oversee case progression. This provides structure and continuity throughout the instruction process.
Our work includes the preparation of expert witness reports, participation in case conferences and joint expert discussions, and attendance at court.
How We Support Your Case
Our dedicated Casework Managers are a valuable resource for legal professionals, providing a single point of contact to manage all expert related communication and administration throughout the life of a case.
Working closely with our network of independent forensic drug specialists, they oversee instructions from initial enquiry through to delivery of the expert report, ensuring cases are progressed efficiently, proportionately and with appropriate awareness of court requirements.

Why work with Forensic Access

Quotes obtained from independent experts in line with LAA requirements

Trusted network of experienced forensic drug experts

Quality checks to ensure reports address the instruction

Dedicated casework management from instruction to court

Maintain high standards of quality across every instruction
Do you need forensic drug evidence input for your case?
Whether you are reviewing prosecution analysis, interpreting complex findings, or seeking independent expert opinion, we are here to help.
What Our Customers Say
Let's talk
*Please note that we can only take instruction via a Barrister or Solicitor, we do not take instruction directly from private individuals.
We are always interested in talking to experienced forensic scientists with a minimum of 5 years of forensic science work who are interested in working as Consultants to undertake ad-hoc work for us.
Call us
01235 774870
Email us
science@forensic-access.co.uk