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Justin Johnson criminal barrister london

Justin Johnson

Junior Counsel

CALLED

2020

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On this page

Justin specialises in criminal defence and prosecution, and extradition law.

He maintains a wide-ranging criminal practice and appears regularly in the Crown Court and youth courts, acting in cases that involve serious and complex allegations. He is instructed in matters spanning the full spectrum of criminal offences, including GBH, burglary (dwelling), sexual assault, and possession with intent to supply controlled drugs.

Before coming to the Bar, Justin worked extensively in the youth justice field within both the Civil Service and the charity sector. His roles focused on policy, safeguarding, and advocacy for children and young people affected by human trafficking, criminal exploitation, and the care system. This background informs his practice and his empathetic, trauma-informed approach to representing young and vulnerable clients.

Justin also defends in extradition proceedings.

Notable Cases

Drugs

R v T (a youth), 2025

Defended in proceedings for possession with intent to supply Class A drugs, advancing a defence under the Modern Slavery Act 2015.

Reading Youth Court

Drugs
Financial Crime

R v E and O, 2026 - ongoing

Prosecuting in a multi-handed money-laundering case involving transactions exceeding £500,000.

Luton Crown Court

R v K, 2026 - ongoing

Defending in a blackmail case involving allegations of sharing intimate images without consent.

Isleworth Crown Court

R v A & A, 2025 - ongoing

Defending in a multi-handed fraud case in which the defendant is alleged to have facilitated the theft of over £50,000 in luxury goods during employment with a global retail brand.

Luton Crown Court

R v A, 2025

Defended in a theft case involving alleged breaches of trust by a nurse providing in-patient care.

Nightingale Court

R v T (a youth) & Ors, 2024

Defended in a multi-handed domestic burglary trial (total value exceeding £40,000) raising a defence of modern slavery.

Uxbridge Youth Court

R v C (a youth) & Ors, 2024

Defended in a multi-handed burglary case involving issues of modern slavery and exploitation.

Inner London Crown Court

Financial Crime
Other

R v S, 2026 - ongoing

Defending in a controlling and coercive behaviour case including allegations of assault occasioning actual bodily harm.

Southwark Crown Court

R v B (a youth), 2025 - ongoing

Defending in a possession of an offensive weapon case.

Public Order

R v G, 2025 - ongoing

Prosecuting in a stalking (fear of violence) case involving two complainants within a domestic context.

Isleworth Crown Court

R v C, 2025

Defended in an intentional harassment, alarm or distress (racially aggravated) case.

Snaresbrook Crown Court

R v S, 2025

Defended in a stalking (fear of violence) case involving allegations of sharing intimate images without consent. Successfully addressed extensive disclosure failings during the trial, resulting in the jury being discharged on an application by the defence.

Canterbury Crown Court

Public Order
Rape and Sexual Offences

R v S, 2025

Prosecuted in a sexual assault trial involving vulnerable witnesses with significant learning differences and section 28 evidence.

Luton Crown Court

Rape and Sexual Offences
Violence

R v H, 2025

Defended in a grievous bodily harm (with intent) trial arising from a bar-fight.

Shrewsbury Crown Court

R v U, 2025

Defended in an assault emergency-worker case requiring detailed cross-examination on police conduct and body-worn footage.

Inner London Crown Court

R v F, 2025

Defended in a grievous bodily harm (without intent) case in which the defendant, during a psychotic episode (not amounting to insanity), stabbed his housemate with a knife multiple times. Following an acceptable plea to section 20, the defendant received a three-year sentence after the court found he was not dangerous.

St. Albans Crown Court

R v O, 2025

Prosecuted an assault occasioning actual bodily harm arising from a prison-based altercation involving a member of staff.

Chichester Crown Court

R v G, 2025

Defended in a multiple battery trial involving a physical altercation on an international flight.

Uxbridge Magistrates’ Court

Violence

Achievements

Associated Work
  • Financial Conduct Authority
  • HMRC
Memberships
  • Young Fraud Lawyers Association
  • Youth Practitioners Association
  • Defence Extradition Lawyers Forum
  • Criminal Bar Association
  • The Honourable Society of the Middle Temple
Appointments
  • CPS Panel (Grade 2)
  • AG Junior’s Junior Panel
Education
  • Bar Professional Training Course, The City Law School
  • Graduate Diploma in Law, The University of Law
  • Analytical Sciences, The Kingston University