Department profile
Simpson Grierson

Competition/Antitrust

Asia-Pacific Guide 2026 : New Zealand


Simpson Grierson

Rankings

About

Provided by Simpson Grierson

Simpson Grierson is one of New Zealand's leading competition law practices, ranked in Chambers Asia-Pacific for competition for 15 consecutive years.

The team advises on the full spectrum of competition law, including merger control, cartel and restrictive trade practice investigations, Commerce Commission proceedings and competition compliance. International law firms and multinational clients regularly engage the team on the New Zealand aspects of global transactions, and it works closely with leading overseas counsel to coordinate competition strategy across jurisdictions.

The practice has a strong track record advising on high-value, strategically significant transactions. The team is regularly instructed on Commerce Commission investigations, enforcement matters and court proceedings involving alleged cartel conduct, anti-competitive agreements and competition law breaches. It also advises on cartel immunity applications, competitor collaborations, joint ventures, misuse of market power, access arrangements and compliance programmes.

A particular strength is guiding clients through regulator-facing matters where enforcement risk, transaction certainty and reputational considerations are critical.

The practice is led by James Craig, recognised for merger control, Commerce Commission investigations and cartel matters, and Nina Blomfield, whose experience across competition law and complex disputes provides valuable insight into merger and conduct investigations.

Chambers Review

Provided by Chambers

Competition/Antitrust - New Zealand

Band 2

Band 2


What the Team is Known For

Simpson Grierson advises on the full range of antitrust and regulatory issues, including M&A and joint venture clearances for blue-chip clients, the preparation of submissions to sector-specific bodies and assistance with compliance programmes. The firm also offers specialist competition litigators ready to advise on both investigations and court proceedings, as well as expertise across a broad range of sectors including construction, energy, telecommunications and media. The practice regularly partners with leading Australian and other overseas firms in support of cross-border mandates.

Work Highlights

Provided by Chambers

  • Simpson Grierson advised mobile service provider 2degrees on its opposition to the clearance application by One NZ to acquire spectrum from Dense Air.

Strengths

Provided by Chambers

  • Simprson Grierson are really good in the competition law space. They're pragmatic and give timely advice you can put into practice.

    Competition/Antitrust respondentAsia-Pacific
  • Simpson Grierson have an excellent understanding of our business needs and are timely in responding to queries.

    Competition/Antitrust respondentAsia-Pacific

Notable Practitioners

Provided by Chambers

  • Band 2James Craig
    Band 2James Craig

    James Craig

    James Craig is based in Auckland and acts on merger clearance mandates, restrictive trade-related issues and Commerce Commission investigations.

    • James has a lovely calm way about him which is appreciated in this complicated and often urgent area of law.

      Competition/Antitrust respondentAsia-Pacific
    • James knows his stuff but even more importantly knows how to translate the complex area of competition law into plain language.

      Competition/Antitrust respondentAsia-Pacific

Ranked Individuals at Simpson Grierson (1)

New Zealand

Members

Provided by Simpson Grierson

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