Jacob Dyer

Year of Call: 1995, Lincoln's Inn

Jacob dyer
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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 Bay - 2023


    Operation Bay’ murder trial. Prosecuted 5-handed murder as leading junior (leading Michelle Brown) against 5 silks with junior counsel. Case involved complex issues of participation and joint enterprise, with the added compilation of cut-throat defences. Secured 4 convictions for murder and one for manslaughter.

  • 2022


    Represented Blackpool Council at an inquest into the death of a man recently discharged from a psychiatric ward. The case concerned issues as to support in place on discharge and consideration of the engagement of Article 2. The coroner concluded that, whilst there might have been earlier planning, that would not have made any difference to the outcome.

  • 2022


    Represented LCC in February 2021 at an inquest into the death of DC - a case involving a patient with multiple health problems raising issues of causation, refusal of treatment and failure to carry out mental capacity assessments.

  • "Operation Finglas" as leading junior, 2019


    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” 2018


    Successfully prosecuted murder as junior alone in a glassing case.

  • "Operation Cronus" 2018


    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) as leading junior, 2017


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


  • 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


  • St Catharine’s College, Cambridge