Senior Leadership Team

Geoff Williamson 220wide

Geoff Williamson

Chief Executive (Acting)

Geoff Williamson joined the Commission in July 2011 and is acting Chief Executive. Before becoming acting Chief Executive Geoff led 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.
Antonia Horrocks 220wide

Antonia Horrocks

General Manager Competition and Consumer

Antonia Horrocks manages the Commission’s competition and consumer 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 manages the 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.
Diana Price2 web

Diana Price

General Manager Organisation Performance (Acting)

Diana Price is acting General Manager Organisation Performance. She joined the Commission in January 2014 as Communications and External Relations Manager. Diana has led the communications function for a range of organisations in New Zealand including the Institute of Directors, Todd Energy and BP. Diana has a BA from Victoria University of Wellington.