3 JG7292

Justin Brereton

Bar roll 2005 Admitted 2000
  • Commercial Law Tort Law
  • Public Law
Read more
Justin Brereton practises in a range of commercial, administrative and regulatory matters

Justin practises throughout Australia in commercial, administrative, regulatory and tort law, particularly in matters involving commercial fraud, directors’ duties, professional negligence, and class actions.

He appears in all jurisdictions at trial and appellate levels. He also appears in Royal Commissions, inquiries, and inquests as well as urgent injunctions and freezing order applications.

Justin regularly advises government agencies and businesses particularly in highly regulated areas such as financial services, where he often works directly with in-house counsel.

Justin also regularly conducts high-level inquiries and investigations.

Since 2016 Justin has been annually recognised by Best Lawyers in the class action litigation category.

Before signing the Bar Roll, Justin was a senior lawyer in the law enforcement directorate of ASIC, where he was responsible for high-profile matters across all areas of ASIC's jurisdiction.

Liability limited by a scheme approved under Professional Standards legislation


Chambers & Clerk

Castan Chambers
Level 15

460 Lonsdale Street

Melbourne VIC 3000

View map

Jane King

03 9225 8558


Commercial Law
  • Banking & Finance
  • Bankruptcy
  • Class Actions
  • Consumer Credit
  • Consumer Law
  • Contractual Disputes
  • Corporate Insolvency
  • Corporations & Securities
  • Energy & Resources
  • Equity & Trusts
  • Insurance
  • Sports Law
  • Superannuation
  • Regulatory Investigations
Tort Law
  • Class Actions
  • Commissions & Inquiries
  • Common Law
  • Inquests
  • Major Torts
  • Negligence
  • Professional Negligence
Public Law
  • Administrative Law
  • Aged Care
  • Commissions & Inquiries
  • Judicial Review
  • White Collar Crime



Bachelor of Laws

Master of Laws

Graduate Diploma in Legal Practice


South Australia


Entitled to practise in

State and Territory Courts and Tribunals

Federal Court of Australia

High Court of Australia

Recent Cases

Recent notable briefs have included:
  • NSW, Victorian, and Queensland Casino Inquiries;
  • Advising in respect of the regulatory response to the Victorian casino Royal Commission;
  • Victorian Hotel Quarantine inquiry;
  • Commonwealth Financial Services Royal Commission - advising and appearing for one of Australia's best-performing superannuation funds;
  • Victorian ‘Black Saturday’ bushfire class actions – appearing for Victorian government agencies in negligence claims;
  • Victorian inquiries into PFAS contamination at the CFA Training College Fiskville and the Hazelwood Mine Fire Inquiry;
  • Commonwealth Royal Commission into Institutional Responses to Child Abuse;
  • Victorian Bushfires Royal Commission – appearing for the State of Victoria on ‘systemic issues’ including the economic and safety regulation of the electricity industry, the funding of fire services and the adequacy of emergency communication systems;
  • Mediterranean Shipping Company – appearing in both Victoria and Western Australia for one of the world’s largest shipping companies in its prosecution of commercial disputes relating to breaches of directors’ duties, fraud, and the tort of conspiracy;
  • Australian Wheat Board – acting for ASIC in aspects of its investigation and subsequent litigation arising from alleged breaches of directors’ duties arising from alleged failures to comply with United Nations sanctions;
  • Westpoint, Great Southern & Opes Prime – advising and appearing for financial service providers and other professionals involved in these matters, including in claims of professional negligence;
  • Acting for various peak sporting organisations – advising and appearing for administrative bodies such as the Professional Boxing and Combat Sports Board, Football Federation Victoria, and AFL football clubs, in commercial disputes and Inquiries.
  • In addition to his work at the Bar, Justin also has extensive experience as a non-executive director in the financial services and not-for-profit sectors.



Victorian Bar - Commercial Bar Association