Deans Court Chambers

Expert legal advice and advocacy, delivered by an outstanding team of Queen’s Counsel and barristers.

The Barristers at Deans Court are regulated by the Bar Standards Board.

Jacob Dyer

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Jacob Dyer - Deans Court Chambers



  • St Catharine’s College, Cambridge


  • CPS Level 4 Prosecutor
  • Member of CPS Specialist Fraud Panel at level 4
  • Member of CPS RASSO Panel

Professional Associations

  • Criminal Bar Association
  • Northern Circuit



Jacob Dyer covers regulatory and criminal work. He both prosecutes and defends all types of serious crime. He has been a category 4 prosecutor since 2009.

He has prosecuted many multi-agency cases involving CPS/DVSA/Trading Standards. He is on the CPS Fraud Panel and has dealt with multi-million pound cases. Regulatory work has included large-scale, cross-border tachograph fraud. He has particular expertise in the manipulation of digital tachographs. He also has broad experience in prosecuting and defending serious road traffic cases, including fatal accidents.

He regularly prosecutes trading standards cases on behalf of Local Authorities. He has particular experience in taxi appeals in the Crown Court and advising Local Authorities on taxi licensing policy.

He has experience of a wide spectrum of violent and sexual offences and has been involved in the training of advocates in the questioning of vulnerable witnesses.

Notable Cases

  • "Operation Finglas"

    Successfully prosecuted 3 defendants charged with conspiracy to falsify tachograph records (one represented by leading counsel). This was a highly technical case involving the development and use of printed circuit boards to defeat the signals from tachograph KITAS sender units.

  • “Operation Shakespeare”

    Successfully prosecuted murder as junior alone in a glassing case.

  • "Operation Cronus"

    Secured convictions against 5 defendants in multiple / complex allegations of fraud, involving the setting up of bogus companies.

  • R v Smedley & Joynson (Liverpool Crown Court)

    Successfully prosecuted Deputy VC of major university for £1/2m fraud.

  • R v Handley (Preston Crown Court)

    Secured acquittal of man charged with cash in transit armed robbery. Allegedly committed on a business park in Preston using a shortened shotgun. The defendant's DNA was found on the headrest of the getaway car. In the 3 week trial, telephone evidence (cell-siting and contact) was relied upon by the Crown to establish the conspiracy. A detailed analysis of the telephone evidence enabled the prosecution case theory to be significantly undermined resulting in the defendant's acquittal.

  • R v Hammond (Barrow Crown Court)

    Successfully defended woman charged with causing death by careless driving.

  • R v Walton (York Crown Court)

    Defended wife of man charged with multiple offences of sexual and physical abuse committed against several children of the family. Secured acquittal on all counts of cruelty relating to sexual abuse, despite conviction of husband

  • Prosecuted "Operation Hive" (Carlisle Crown Court)

    A multi-handed drugs conspiracy involving what was the largest seizure of heroin in Cumbria.


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