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Haydon graduated with a Bachelor of Laws from Edith Cowan University and a Graduate Diploma of Legal Practice from Leo Cussen Centre for Law.

Prior to his admission as a lawyer, Haydon served over a decade as an investigator in state government agencies and commissions. He has worked in the areas of financial crime, consumer protection, licensing and integrity, amongst others.

He is admitted as a barrister and solicitor of the Supreme Court of Western Australia, the High Court of Australia and the High Court of New Zealand.

Haydon practices primarily in criminal law and civil and commercial litigation and has appeared as counsel in criminal, civil and disciplinary matters in most courts and tribunals in Western Australia.


He currently holds the position of treasurer of the Western Australian Horse Council, the peak advisory body for equestrian activities, and sits as a member of the judiciary (disciplinary tribunal) for both the National Rugby League (NRLWA) and the Australian Police Rugby League (APRL).

Haydon has previously held positions as vice chairman of the Eastern Region Domestic Violence Services Network and non-executive director (legal and governance) at Paediatric Nursing Services, two large non-for-profit organisations.

Haydon also works with the WA Police Academy assisting with the assessment of police officers undertaking detective training school.


Haydon regularly appears on 6PR Radio and Curtin FM to commentate on various legal issues.

Recent cases and outcomes

  • A client charged with 542 counts of aiding official corruption had all charges discontinued by the Director of Public Prosecutions following the defence team's persistence in requiring the prosecution to come up to proof on each charge. We also successfully applied for a judge-alone trial, an application that is rarely granted.

  • An international student charged with 6 breaches of COVID-19 self-quarantine laws received a $5,000 fine and spent convictions after we filed comprehensive written submissions with supporting evidence from a psychologist and character references, despite many people convicted of a single offence being sentenced to immediate imprisonment.

  • We were successful in obtaining a family violence restraining order against our client's ex-husband following a trial (final order hearing). Our client was the victim of decades of family violence. In addition to the restraining order, we obtained an order requiring the ex-husband pay all our client's legal costs.

  • A client who purchased a new van for his courier business which developed several mechanical issues received a full refund in addition to over $10,000 in compensation for consequential losses (including lost wages) after the dealership ignored his complaints for several months and merely directed him to the manufacturer.

  • A regional nurse who had made significant contributions to her local community and had no criminal history was involved in a motor vehicle collision and was charged by police for careless driving causing grievous bodily harm. Despite looking each way before crossing a country road, our client did not see the approaching vehicle, and was facing imprisonment as a consequence. We made comprehensive written and oral sentencing submissions, which the court accepted. The client received a suspended fine of $9,000 (not required to be paid) and spent convictions.

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