John McGuiness

John McGuiness
Level 12
20 Martin Place
NSW 2000
+61 2 9338 2613


Who's Who Legal Arbitration: Expert Witnesses

John is a leading dispute advisory expert and has many years’ experience in advising clients and providing objective analysis of transactions in major commercial disputes.

He draws on skills from accounting, finance, costing and general commercial advice to deliver analysis and opinions on issues that generally involve large data sets or complex issues. A significant part of John’s work involves the provision of valuation advice related to assets, equities and other matters in dispute settings.

He has delivered many valuation and expert reports across a wide range of industry settings. His experience covers government, financial services, energy and natural resources, industrial markets, property and construction, infrastructure and telecommunications.

John provides expert evidence in commercial matters where there are significant differences (or disagreements) of financial outcomes. This role requires the preparation of simple yet comprehensive reports and financial models to assist the court or arbitration.

His work is acknowledged for its objective nature and conceptual merit, for example: “[the court] accept[s] that in giving his evidence, Mr McGuiness was a true professional witness.” Another matter observed: "in relation to matters of expert judgement and objectivity, [the court] preferred the evidence of Mr McGuiness. His approach was particularly careful and thorough. He gave careful and reasoned consideration to his task at all stages of his engagement, from his initial report through to his evidence at hearing.”

He holds degrees in science (mathematics) and commerce from the University of Queensland, an MBA and a master's in applied finance from the Queensland University of Technology, and is a member of the Institute of Chartered Accountants in Australia and New Zealand.

WWL says: John McGuiness is a top-tier expert witness, recognised for his strong valuation analysis in major commercial disputes.

This biography is an extract from Who's Who Legal: Arbitration which can be purchased from our Shop.

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