Wayne Leach

Wayne Leach

Wayne Leach is Head of KWM’s National Competition Law Group at King & Wood Mallesons.

Wayne regularly advises large corporations on strategically important competition law issues associated with mergers, joint ventures, industry collaborations, access to essential infrastructure, regulatory studies and investigations across Australia and the Asia-Pacific region.

Wayne represents clients in a range of industries, including the technology, resources, export infrastructure, agricultural, fast-moving consumable goods, financial and healthcare sectors. 

Recognition and awards

  • Leading individual in Chambers and Partners
  • Best Lawyers Australia – Competition, Regulatory and Corporate
  • Who’s Who Legal – listed lawyer for Competition
  • Who’s Who Legal – Global Future Leaders
  • Global Competition Review Who’s Who of Competition Lawyers and Economists

Representative matters

  • Advising Facebook on a wide range of matters including the ACCC’s world-first Digital Platforms Inquiry, the Australian Government’s news media bargaining code, Facebook’s acquisition of GIPHY and various ACCC market studies.
  • Advising Google on its high profile USD 2.1 billion acquisition of Fitbit, Inc.
  • Advising The Walt Disney Company on the Australian regulatory clearances for its acquisition of Twenty-First Century Fox, Inc, valued at US$71 billion
  • Advising Glencore on a range of acquisitions and sale processes, including the Glencore / Xstrata merger, acquisition of a 49% interest in the HVO Joint Venture, acquisition of an interest in the Hail Creek Joint Venture, acquisition of interest in Clermont coal mine, sale of G-Rail, and sale of Glencore’s 49.9% interest in Glencore Grain
  • Advising Zurich Insurance in relation to its A$741 million acquisition of global travel insurance business, Cover-More
  • Co-lead counsel (Asia-Pacific role) in a major and long-running multi-jurisdictional cartel investigation
  • Advising SunRice in relation to the NSW Department of Primary Industries’ Rice Vesting Review and the PNG competition regulator’s rice market review
  • Advising Viterra on its port terminal access undertakings to the ACCC, the introduction of a port terminal capacity auction system, introduction of long term capacity agreements and application for exemption under Australia’s mandatory access code
  • Advising Port Waratah Coal Services in relation to capacity allocation systems at the Port of Newcastle


  • 1995 - Bachelor of Laws degree (First class honours and University Medal), Australian National University
  • 1996 – Graduate Certificate in Legal Practice, Australian National University
  • 1993 - Bachelor of Arts (Political Science and English Literature), Australian National University

Previous experience

  • 2011 – present: Partner, King & Wood Mallesons
  • 2008 – 2011: Senior Associate, King & Wood Mallesons
  • 2004-2008: Senior Corporate Lawyer, Sydney Airport
  • 2003-2004: Senior Associate, Mallesons Stephen Jaques
  • 2001-2002: Senior Associate, Allen & Overy, Brussels
  • 1996-2000: Solicitor, Mallesons Stephen Jaques



Legal insights

The ACCC has just unveiled its long-awaited merger reform proposals.

27 August 2021

With the current mergers test squarely on the ACCC’s reform agenda, we examine the background to the current debate and ask whether it is the substantive legal test or the merger review process that...

24 August 2021

From 1 July 2021, suppliers who provide products valued between $40,000 to $100,000 to any person will now be subject to certain aspects of Australian Consumer Law.

05 July 2021

NSW Fair Trading is likely to be more actively monitoring and enforcing new disclosure obligations introduced in 2020, which require suppliers to consumers to take extra steps to disclose certain...

11 May 2021

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