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Our executive leadership team

Managing our organisation is our chief executive and our executive leadership team.

Mark Ratcliffe - Interim Chief Executive

Mark Ratcliffe, Interim Chief ExecutiveMark joined the NZ Transport Agency in January 2019 as interim CEO until a permanent Chief Executive is recruited.

Mark is a highly experienced CEO with considerable expertise in running critical national infrastructure. He was the CEO of Chorus from 2008 when it was part of Telecom and through its demerger, before leaving in 2017. Mark is currently also a Director for First Gas Limited, 2degrees and a Housing New Zealand Board Member.


Robyn Fisher - Director Office of the Chief Executive

Robyn Fisher

Robyn joined Land Transport New Zealand in 2007 and has held a number of roles as part of the NZ Transport Agency since its inception in 2008 including portfolio management, Group Business Manager, Strategy, Communications and Performance and National Manager, Governance. Robyn took up a position in the Chief Executive’s Office late 2014.

Robyn has over 20 years’ experience in local government including land use consent, policy and leadership roles. Her first central government role was with the Office of Treaty Settlements where she was closely involved with the settlement negotiations for Te Arawa (land) and Ngāti Apa.  

Robyn has a Bachelor’s degree in Regional Planning (Hons) and a Post Graduate Diploma in Negotiation and Mediation.


Charles Ronaldson - Operations General Manager

Charles Ronaldson, Customer Design and Delivery General Manager

Charles joined the Transport Agency in May 2017 having previously worked for a number of government departments over 16 years. Charles has significant experience in customer-centred service delivery and design, together with leading large customer facing teams of up to 2200 people in both the public and private sectors.

He spent 10 years with Inland Revenue and was instrumental in establishing a strong customer focus in the organisation against a compliance backdrop. Prior to joining the public sector, Charles held a number of roles in the banking sector.


Giles Southwell - General Manager Workplace Technology

Giles Southwell, Corporate Services General Manager

Giles joined the Transport Agency in June 2017. His previous role was at Inland Revenue as the chief financial officer.

Originally from the United Kingdom, Giles has worked across the public sector since the early 1990s. His roles focused on improving business performance and value for money, identifying service improvements and delivering effective corporate governance and assurance. He moved to New Zealand in 2008 to work for the Office of the Auditor-General where he was responsible for leading work on improving service performance information.

In 2015 and 2016 Giles completed secondments as: Inland Revenue’s chief technology officer; the Ministry of Health’s chief technology and digital services officer; and the Ministry for Culture and Heritage corporate services group manager.


Brett Gliddon - General Manager Transport Services

Brett Gliddon, System Design and Delivery General Manager

Brett joined Transit New Zealand before it merged with Land Transport NZ to become the Transport Agency. He is a qualified civil engineer with more than 18 years’ experience in infrastructure planning, design and delivery, including maintenance and operations. Brett has been involved in the development of some of New Zealand’s largest infrastructure projects including the Northern Busway project, the Northern Gateway Toll Road project (New Zealand’s first electronic toll road), the Waterview Tunnel project and the Te Ara I Whiti (Lightpath) cycleway.

As System Design and Delivery General Manager, Brett is responsible for overseeing design, delivery and management of a single integrated transport system. Brett’s vision for the future of the System Design and Delivery Group is one of collaboration, both internally and externally, and continuing to build strong relationships with local authorities, customers and suppliers to become a true integrated transport system delivery group.


Greg Lazzaro - Safety, Health and Environment General Manager

Greg Lazzaro - Safety, Health and Environment General Manager

Greg joined the NZ transport Agency in March 2019 as the General Manager, Safety, Health & Environment.

Greg comes to the NZ Transport Agency from Fonterra where he held a Global Health, Safety, Risk and Resilience capacity and previously held Senior Executive positions in Health, Safety & Environment roles in Sodexo, UGL in Australia and various roles operational roles in Orica in Australia for over 10 years.

Greg holds a degree in Chemical Engineering.


Kane Patena – Regulatory General Manager

Kane Patena – Regulatory General Manager

Kane joined the Transport Agency in April 2019 to lead the regulatory compliance group and help shape the future of land transport regulation in New Zealand.

Kane brings with him extensive regulatory experience from both the public and private sector. His expertise has also been publicly acknowledged as a previous recipient of the ‘New Zealand Compliance Practitioner of the Year’ award.

Prior to his appointment, Kane worked as the Wellington City Council’s Director of Strategy and Governance. He has also served as a Crown Prosecutor and been a partner at law firm Meredith Connell.

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