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Trusted Drug Expert Witness Services in Birmingham

Claymore Advisory Group provides professional drug expert witness services in Birmingham, supporting both defence and prosecution teams in complex drug-related cases. With decades of policing experience and over 2,000 expert witness reports completed, we deliver impartial, factual insight to courts across the West Midlands.


Our team specialises in analysing drug supply chains, valuation trends, street slang, and encrypted communications. Whether it's a localised County Lines network or a high-level organised crime operation, we offer clear and comprehensive courtroom testimony designed to support legal teams in Birmingham with confidence.

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"I have been an officer for 24 years and a Detective for 16 years. I have presented many cases in court, in my opinion, Gary was one of the best expert witnesses that I have seen present evidence"

 

Detective from WM Regional Organised Crime Unit

"Best training we have had - Trainers were experienced and clear experts in the field – Very engaging and helpful, brilliant input."

 

Operation Skybridge – Proactive USG team

"In my 30 years of doing this I have never come across a drugs expert witness as good as Mr Carroll, he was extremely fair and professional"

 

Defence counsel - St Philips Chambers

"Principle expert in Operation Glimmer – multiple persons jailed for over 40 years in drug and gun supply case Members of 61 gang who starred in Trapline Jump video jailed for firearms offences"

 

Birmingham Live (birminghammail.co.uk)

"The report was very well prepared and easy to understand. As a result, the CPS have reviewed the charges from PWITS Class A to Class B and agreed to a plea with the client. We will certainly use again!"

 

Defence counsel

"Principle expert in Operation Firecrest – One of largest counterfeit drug productions in UK selling £5million worth of Xanax Fake Xanax gang produced pills in sheds and made millions"

 

Detective Sgt Bebb

"Multiple Command Team Awards & recognition in additional to Chief Constable Commendation – All on work around drugs, urban street gangs and organised crime."

"Thanks Gaz, appreciate you all getting this resolved so quickly. Top work as ever."

 

Detective Sgt, West Midlands Police – County Lines Task force

"Prior to your report there was an application to dismiss the whole case. We served your report, and we now have both defendants serving Early Guilty Pleas. Thanks so much"

 

Detective Sgt - Regional Organised Crime Unit

"Your expert opinion on drug-gang terminology from phone and social media outlets provided critical to the convictions of the 5 offenders, resulting in a total of 41.5 years imprisonment."

 

Detective Chief Superintendent Jones

"Multiple Command Team Awards & recognition in additional to Chief Constable Commendation – All on work around drugs, urban street gangs and organised crime."

"The report was very well presented and understood. CPS have since reviewed the charges and agreed a plea with the client, we will certainly use again."

 

Defence counsel

"I have been an officer for 24 years and a Detective for 16 years. I have presented many cases in court, in my opinion, Gary was one of the best expert witnesses that I have seen present evidence"

 

Detective from WM Regional Organised Crime Unit

"Best training we have had - Trainers were experienced and clear experts in the field – Very engaging and helpful, brilliant input."

 

Operation Skybridge – Proactive USG team

"In my 30 years of doing this I have never come across a drugs expert witness as good as Mr Carroll, he was extremely fair and professional"

 

Defence counsel - St Philips Chambers

"Principle expert in Operation Glimmer – multiple persons jailed for over 40 years in drug and gun supply case Members of 61 gang who starred in Trapline Jump video jailed for firearms offences"

 

Birmingham Live (birminghammail.co.uk)

"The report was very well prepared and easy to understand. As a result, the CPS have reviewed the charges from PWITS Class A to Class B and agreed to a plea with the client. We will certainly use again!"

 

Defence counsel

"Principle expert in Operation Firecrest – One of largest counterfeit drug productions in UK selling £5million worth of Xanax Fake Xanax gang produced pills in sheds and made millions"

 

Detective Sgt Bebb

"Multiple Command Team Awards & recognition in additional to Chief Constable Commendation – All on work around drugs, urban street gangs and organised crime."

"Thanks Gaz, appreciate you all getting this resolved so quickly. Top work as ever."

 

Detective Sgt, West Midlands Police – County Lines Task force

"Prior to your report there was an application to dismiss the whole case. We served your report, and we now have both defendants serving Early Guilty Pleas. Thanks so much"

 

Detective Sgt - Regional Organised Crime Unit

"Your expert opinion on drug-gang terminology from phone and social media outlets provided critical to the convictions of the 5 offenders, resulting in a total of 41.5 years imprisonment."

 

Detective Chief Superintendent Jones

"Multiple Command Team Awards & recognition in additional to Chief Constable Commendation – All on work around drugs, urban street gangs and organised crime."

"The report was very well presented and understood. CPS have since reviewed the charges and agreed a plea with the client, we will certainly use again."

 

Defence counsel

"I have been an officer for 24 years and a Detective for 16 years. I have presented many cases in court, in my opinion, Gary was one of the best expert witnesses that I have seen present evidence"

 

Detective from WM Regional Organised Crime Unit

"Best training we have had - Trainers were experienced and clear experts in the field – Very engaging and helpful, brilliant input."

 

Operation Skybridge – Proactive USG team

"In my 30 years of doing this I have never come across a drugs expert witness as good as Mr Carroll, he was extremely fair and professional"

 

Defence counsel - St Philips Chambers

What Our Drug Expert Witness Services Cover

Our Birmingham-based expert witness services cover a wide range of drug-related matters, including:

• Drug Valuation & Trafficking
Assessing street-level pricing, wholesale valuation, and trafficking patterns.
• Drug Production & Cultivation
Expert analysis of cannabis grows and illicit substance manufacturing, with insight into legal medicinal use.
• Encrypted Communications & Slang Interpretation
Decoding EncroChat, Sky ECC and slang-rich messages, including Drill lyrics and debt ledgers.
• Organised Crime Groups & County Lines
Mapping gang structures, roles, and local-to-national drug distribution operations.
• Proceeds of Crime & Financial Evidence
Evaluating financial records, cash seizures, and POCA-related valuations.


Each expert witness report is tailored to the needs of Birmingham courts, ensuring that every opinion is clearly presented, legally relevant, and rooted in frontline knowledge.

Why Legal Teams in Birmingham Choose Claymore

 

• Over 2,000 expert witness reports delivered across the UK
• Experienced testimony in Birmingham Crown and Magistrates’ Courts
• First-hand insight from ex-policing professionals specialising in drug offences
• Fully impartial and court-tested opinions
• Fast, secure delivery of court-ready reports and supporting materials


Claymore’s Birmingham presence means we understand the local drug trends, supply dynamics, and enforcement frameworks. This local insight strengthens our ability to support judges, juries, and solicitors with precise, credible evidence.

Contact Your Local Drug Expert Witness

If you're handling a case in Birmingham and require a qualified drug expert witness, get in touch for a no-obligation consultation.


Email: info@claymoreadvisorygroup.co.uk

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gary.carroll@claymoreadvisorygroup.cjsm.net 

info@claymoreadvisorygroup.co.uk

Gary Carrol | LinkedIn

 

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Blenheim Way,

Birmingham,

West Midlands,

B44 8LS

 

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