Senior Leadership Team

Brent Alderton 220wide

Brent Alderton

Chief Executive

Brent Alderton is the Chief Executive of the Commerce Commission in New Zealand, a role he has held since January 2011. Brent joined the Commission in 2009 and held the role of General Manager Regulation immediately prior to becoming Chief Executive. Before joining the Commission, Brent gained a broad range of business experience in both the private and public sector in New Zealand. This includes a variety of finance, strategy, policy and analysis roles at organisations such as New Zealand Oil and Gas Limited, Deloitte, the Electricity Corporation, the Treasury and the Department of Social Welfare. Brent has a BA (Hons) in economics and an MA in political studies from the University of Otago.
Antonia Horrocks 220wide

Antonia Horrocks

General Manager Competition

Antonia Horrocks is General Manager Competition and manages the Commerce Commission’s competition branch. She joined the Commission in August 2016 and was previously a Project Director at the UK Competition & Markets Authority, managing competition and consumer cases. She held a similar role at the UK Competition Commission. Prior to joining the regulator, she worked as an antitrust lawyer in London for nearly a decade, most recently as Counsel in the Antitrust Group of Shearman & Sterling (LLP) in London. She started her career in New Zealand and has a law degree, a BA (Hons) in English and a Postgraduate Diploma in EU Competition Law.
Nick Russ 220wide

Nick Russ

General Manager Regulation

Nick Russ is General Manager Regulation and manages the Commerce Commission’s regulatory functions across a number of sectors including electricity lines, gas pipelines, major airports, telecommunications and dairy. He was previously Head of Part 4 and Dairy. Nick joined the Commission in November 2010 as a Chief Adviser in the regulation branch working across a range of regulatory issues. Before joining the Commission he spent a number of years working for energy regulators in the UK and Australia. Nick has a degree in electrical engineering and is a chartered engineer.
Geoff Williamson 220wide

Geoff Williamson

General Manager Organisation Performance

Geoff Williamson joined the Commission in July 2011 and leads the organisation performance branch. Geoff was previously Director Corporate Services at the Tertiary Education Commission and his previous work experience includes Chief Financial Officer at the National Library of New Zealand and a range of roles at Deloitte. Geoff has a BCA from Victoria University of Wellington and an Executive Master of Public Administration through the Australia and New Zealand School of Government, and is a Chartered Accountant.