Greg Unwin

Greg Unwin is a specialist criminal practitioner whose recent jury trials have included homicide, terrorism, complex fraud, money laundering and drugs conspiracies, as led junior or junior alone. He is thorough and committed to his cases, conscientious in his advice to clients, and a persuasive advocate in court.

Described by a trial judge as "one of the most impressive young advocates I have seen in some ten years sitting in the Crown Court", he had three reported cases in Archbold and Blackstone's within the first three years of tenancy. He consistently demonstrates his ability to master legally and factually complex cases and is adept with technical, electronic and high volume evidence.

Greg Unwin predominantly defends, but is also appointed to the CPS Specialist Advocate Panels for Serious Crime and Fraud (both at Level 3), the Serious Fraud Office Prosecution Panel B and Regulatory List B.

He has advised corporate clients in the context of criminal investigations and regulatory compliance, and defended in extradition proceedings.

Greg Unwin is experienced in professional disciplinary proceedings, with several appearances in complex and high profile cases before regulatory panels of the NMC.

In appropriate cases he can accept instructions directly under the Bar’s Public Access scheme.

His professional judgement and technical skills benefit from six years' consulting practice with an international firm before qualifying as a lawyer and joining the Bar. His clients included the Guardian, Shell, Barclays, HMRC and the House of Commons.

Notable Cases

General Crime

  • R v NB (2018) – Murder of resident at St Mungo's hospital, who died from complications over five years after the original assault. Led junior for defendant found unfit to plead.
  • R v Onyeagucha (2018) EWCA Crim 2960 – Successful appeal against life sentence. 
  • Operation Endorse (2018) – Attempted murder: gang shooting of drugs runner by rival drugs network. Led junior for first defendant.
  • Operation Departer (2017) – Defendant facilitated escape to Syria of aspiring jihadi following the ISIS inspired murder of a spiritual healer. Led junior.
  • R v Ian Paterson (2017) – High profile cancer surgeon deliberately wounded multiple patients in unnecessary operations. Prosecution disclosure junior.
  • R v Russell & Storey (2016) – Prosecuted serious acid attack. Investigation reopened when a 'grass' came forward after Crimewatch appeal.
  • Operation Trieste (2015) – Only defendant acquitted in seven week trial of multi-kilo drugs conspiracy.
  • R v KR (2014) – Alleged repeated sexual assaults of a child in religious family context. Defendant acquitted.
  • Operation Ilex (2013) – Armed robberies conspiracy. Junior alone for only acquitted defendant. Extensive cross-examination of telephone experts.
  • R v KP (2013) – Defendant with psychotic illness imprisoned her GP during home visit and attacked her with a baseball bat. Fitness proceedings.
  • R v Nguyen, Mai & Dao (2013) Crim. L.R. 234 – Whether threat of false imprisonment can establish the defence of duress. Application of the Human Trafficking Convention. Junior alone for the appellants against David Perry QC.



  • Operation Range (2018) – For lead defendant in large scale car ringing.
  • R v Say (2017) – Complex pensions and property fraud trial of IFA acknowledged as industry expert.
  • R v Emery (2016) – Carbon credits boiler room fraud. 
  • Operation Hornet (2015-6) – Retained by financial institution to advise on LPP in £245m criminal fraud investigation.
  • Operation Airbrick (2015) – Company director acquitted after seven week trial of £14 million money laundering allegations in the under bond alcohol trading industry.
  • United Arab Emirates v Akhand (2015) – Direct Access. Defendant’s extradition to the UAE for US$8 million cheque fraud resisted on dual criminality grounds.
  • Operation Steamroller (2013) – Independent LPP counsel instructed by the SFO. International $120 million share sale fraud.


Professional Discipline

  • Winterbourne View Hospital (2016-7) – Presented document-heavy hearings against multiple senior nurses responsible for managing the hospital during the institutional abuse scandal exposed by BBC Panorama.
  • R v Khan (2015) – Secured the only acquittal in seven week multi-kilo drugs conspiracy trial. Led by Neil Fitzgibbon.
  • HMRC v Hussain (2015) – For defendant acquitted after seven week trial of £14 million money laundering allegations in the under bond alcohol trading industry. Led by Mozammel Hossain.

Education and Awards

  • South Eastern Circuit Florida Advanced Advocacy Scholarship 2014.
  • Winner / Finalist: BPP, City and ELMC mooting competitions 2007-2008, judged by Longmore LJ, Lord Neuberger and judges of the ECJ.
  • Times Law Award 2007, presented by the Lord Chancellor.
  • Bar Vocational Course, BPP Law School, London (Middle Temple Queen Mother Scholarship 2007).
  • Graduate Diploma in Law, City Law School, London (Middle Temple Queen Mother Scholarship 2006).
  • MA (Hons) Philosophy, Queens' College, Cambridge University (College Prize and Exhibition 1997).


  • Criminal Bar Association
  • South Eastern Circuit
  • Bar Human Rights Committee