Wayne Leach

Wayne Leach

Wayne Leach is Head of the Competition Law Group at King & Wood Mallesons in Sydney.

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 resources, technology, export infrastructure, agricultural, telecommunications, fast-moving consumable goods, financial and insurance 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 2017
  • Global Competition Review Who’s Who of Competition Lawyers and Economists

Representative matters

  • 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 (global coordination role), acquisition of an interest in the Hail Creek Joint Venture (global coordination role), acquisition of interest in Clermont coal mine (Asia-Pacific role), sale of G-Rail, and sale of Glencore’s 49.9% interest in Glencore Grain
  • 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 Zurich Insurance in relation to its A$741 million acquisition of global travel insurance business, Cover-More
  • Advising Facebook in relation to the ACCC’s Digital Platforms Inquiry
  • 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, and introduction of long term capacity agreements
  • Advising Telstra in relation to the ACCC Final Access Determination for the Domestic Transmission Capacity Service and fixed line services
  • Advising Port Waratah Coal Services in relation to the introduction of 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

ACCC commences new inquiry into perishable agricultural products and the dairy code.

04 September 2020

The Federal Government has announced that it will direct the ACCC to conduct a market inquiry into the water markets operating in the MDB.

06 August 2020

Our experts examine the key competition and consumer laws that businesses may encounter during this time, discuss how the ACCC, the Courts and the Government may approach the unfolding situation, and...

30 March 2020

The Australian Competition and Consumer Commission (the Commission) has recently cited difficulties in proving that some mergers would result in a breach of Australian competition laws as part of a...

23 October 2019

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