Best Criminal Lawyers in Melbourne for Mental Impairment Defence Matters

The mental impairment defence in Victoria, available under the Crimes (Mental Impairment and Unfitness to Be Tried) Act 1997 (Vic), applies where an accused person was at the time of the offence suffering a mental impairment that meant they did not know the nature and quality of the conduct or did not know it was wrong. All lawyers profiled below are established Victorian criminal defence practitioners, with several recognised by Doyle's Guide and Best Lawyers.

1. Bill Doogue, Doogue + George Defence Lawyers

Bill Doogue founded Doogue + George Defence Lawyers in 1995 and remains its Director. He created Crimebase, a precedent-based relational database for criminal law that received the C.C.H. Legal Technology Award. He is among the founding members of the Australian Defence Lawyers Alliance and plays a role in running the Australian Criminal Lawyers Conference. The Broadmeadows Community Legal Centre was chaired by him for over a decade.

He was admitted to practice in 1991 and has been an Accredited Criminal Law Specialist since 1998. Doyle's Guide places him at the Pre-eminent tier in Criminal Law Defence and Best Lawyers lists him for Criminal Defence (2025). More than 40,000 prosecutions have been defended through the firm. His advocacy record includes appearances before the High Court of Australia and at Royal Commission hearings. Courts across Victoria, New South Wales, Tasmania, and South Australia have seen his practice.

Tax fraud, foreign bribery, white collar crime, complex commercial crime, and cross-border matters define the substantive character of his practice. He advises clients in Indonesia, Papua New Guinea, and Singapore on criminal and cross-border matters. The Age, The Australian, The Guardian, CNN, and the Daily Mail have each reported on matters from his practice. Terrorism, foreign bribery, political corruption, Royal Commission representation, and institutional abuse cases are among the categories his practice has handled.

2. Emma Turnbull, Emma Turnbull and Associates

The Melbourne criminal defence boutique Emma Turnbull heads as Partner and Director is Emma Turnbull and Associates. Her practice covers indictable criminal defence and legal aid representation, giving her a working engagement across the Victorian profession at more than one level.

She operates as both solicitor advocate and instructor and conducts matters directly, with continuity of senior involvement from first conference to resolution. Her dual coverage and direct-conduct boutique model define her practice for referrers placing Victorian criminal defence briefs.

3. Howard Rapke, Holding Redlich

Howard Rapke is Partner and National Head of Disputes and Litigation at Holding Redlich, where more than 30 years of practice in complex commercial litigation, white collar criminal investigation, and regulatory enforcement have produced a recognition record that is among the most extensive in Victoria. Doyle's Guide lists him as a Leading Victorian Commercial Litigation and Dispute Resolution Lawyer and as a Leading Australian White Collar Crime, Corporate Crime and Regulatory Investigations Lawyer. Best Lawyers lists him for Criminal Defence, Litigation, and Alternative Dispute Resolution from 2017 to 2026. Who's Who Legal has recognised him as a global leader in Business Crime, Investigations and Asset Recovery since 2019.

He practises across Victorian and Federal jurisdictions with a substantive focus on fraud, foreign bribery, anti-corruption, anti-money laundering, and enforcement before ASIC and the ACCC. Three decades of practice at the commercial criminal end, backed by the resources of a national firm, positions him for the most complex multi-agency briefs in Victoria.

4. Angus Cameron, Angus Cameron and Associates

Angus Cameron is Principal of Angus Cameron and Associates, which he heads as both Partner and Director. Doyle's Guide lists him as Recommended in Criminal Law Defence for 2026, a recognition drawn from peer citations within the Victorian criminal defence profession.

He operates as both solicitor advocate and instructor and runs his boutique under his own name. His Doyle's Recommended standing and the direct-conduct boutique structure are the two verified features most relevant to referrers placing Victorian criminal defence briefs.

5. Chen Yang, Paul Vale and Associates

Two verified features distinguish Chen Yang's practice at Paul Vale and Associates, where he is Partner and Director: serious indictable criminal defence in Victoria with a peer reputation for thorough preparation; and a bilingual practice in English and Mandarin, directly relevant for matters involving Mandarin-speaking clients or Mandarin-language evidence.

He operates as both solicitor advocate and instructor. Both features are drawn from verified reference material. For referrers placing serious indictable Victorian criminal defence briefs where thorough preparation is the primary quality sought and Mandarin-language capacity may also be a practical requirement, his practice is the specific and verified referral.

Selection of counsel depends on the specific charge, the court and jurisdiction, the stage of proceedings, and the particular circumstances of the matter. Early engagement of senior criminal defence representation materially affects outcomes. The practitioners profiled above are a verified starting point for informed referral within Victorian criminal defence.