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Overview
Introduction
John stands out for his ability to combine technical competition and consumer law experience with commercial judgement, strategic clarity and insight into how regulators think.
John McKellar advises clients on Australian competition and consumer law, with a focus on merger control, ACCC investigations, competition litigation and strategic commercial arrangements.
John has guided clients through many complex ACCC and multi-jurisdictional merger reviews, including matters involving in-depth investigations, remedies and divestitures. He regularly advises on Australia’s new merger regime.
John acts for clients in investigations and proceedings involving allegations of anticompetitive mergers, anticompetitive agreements, cartel conduct and misuse of market power.
John also advises on competition and consumer law risk in commercial arrangements, helping clients structure transactions, collaborations, supply arrangements, distribution models and other business conduct.
His Australian practice is informed by international experience, including service at the UK Competition and Markets Authority and time practicing at US law firms in London. He also holds postgraduate qualifications in competition economics from King’s College London.
John advises clients across sectors including technology, financial services, private equity, agriculture, healthcare, energy, transport, hotels, consumer goods and construction materials.
Latest thinking
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Legal development
No Safe Harbour: High Court Limits Crown Immunity for Government Contracts
May 14, 2026
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Legal development
Restructuring transactions captured by new ACCC merger regime
November 20, 2025
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Legal development
New Dawn – transitional period for the new Australian merger regime commences
July 03, 2025
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Legal development
Competition and consumer policy in the Australian Government's second term
May 07, 2025
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