Scientific Analysis Built to Withstand Scrutiny

Objective scientific and strategic advisory grounded in evidentiary discipline, regulatory understanding, and real-world complexity.


Holmes Research Group is a scientific and regulatory advisory firm providing expert witness and litigation support, analytical chemistry expertise, and strategic counsel in complex regulatory matters, including hemp, cannabis, and emerging industries.

Our work sits at the intersection of science, law, regulation, and public policy—where technical evidence must withstand scrutiny and complex decisions carry real consequences.

Modern architectural interior representing rigorous scientific analysis, expert witness services, and regulatory strategy.

SCIENCE. STRATEGY. INFLUENCE.

SCIENTIFIC LEADERSHIP


Andrea E. Holmes, PhD

Dr. Holmes provides objective scientific analysis and expert testimony in matters involving regulatory interpretation, scientific evidence, organic chemistry, and complex technical investigations.

Andrea E. Holmes, PhD, scientific expert witness, professor of chemistry, author, and founder of Holmes Research Group.

Professor of Chemistry, researcher, author, and scientific expert witness recognized for translating complex scientific issues into clear, defensible analysis for legal, regulatory, and institutional audiences.

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OUR FOUR PRINCIPLES


Independent

01

Objective analysis. No agenda. No conflicts.


Rigorous

02

Decades of combined experience in high-stakes matters.


Objective

03

Evidence-based. Methodical. Defensible.


Trusted

04

Relied upon by attorneys, regulators, companies and policymakers.

TRUSTED WHERE ACCURACY MATTERS


HRG supports attorneys, regulators, executives, trade organizations, and policymakers confronting complex scientific, regulatory, and strategic questions.

Our work spans litigation, regulatory proceedings, legislative initiatives, and emerging industries where technical accuracy, evidentiary rigor, and informed judgment are essential.

We combine scientific expertise with strategic insight to deliver objective analysis, defensible conclusions, and clear communication when the stakes are high.

EXPERTISE


Integrated counsel at the intersection of science, law, and policy.

INSIGHTS


Analysis that informs what comes next.

REPRESENTATIVE ENGAGEMENTS


Litigation

Regulatory Proceedings

Legislative Initiatives

Product Evaluation

Scientific Due Diligence

Emerging Industries

Science. Strategy. Influence.