Management team

Meet the decision-makers and people responsible for our operations.
Marlborough Lines

Tim Cosgrove

ME(Mgt), BE(hons) (mech), BCom, CEng, CMInstD

Chief Executive Officer

Tim joined Marlborough Lines as Chief Executive in April 2020. He is responsible for the leadership, strategic direction and delivery of all stakeholder, financial and operational objectives. Tim has held roles within the Todd Corporation as General Manager Todd Generation and headed Operations and Development for Nova Energy. Prior to his time with Todd Corporation, Tim was a Lieutenant Commander in the Royal New Zealand Navy.

Marlborough Lines

Gareth Jones

BCom, CA

Chief Financial Officer

Gareth joined Marlborough Lines in April 2016, and is responsible for the Group’s finance, administration and ICT systems. Gareth is a Chartered Accountant, with previous experience working at KPMG in both audit and corporate finance areas. Gareth has significant experience in the electricity distribution sector having held a number of senior finance roles at Powerco Limited for the five years prior to joining Marlborough Lines.

Marlborough Lines

Stephen McLauchlan


General Manager Field Services

Stephen manages the Company’s field services division, which employs the majority of the company’s staff. He has electrical and management qualifications, and is a member of the New Zealand Institute of Management (MNZIM).

Marlborough Lines

Warner Nichol

DipEng (Electrical)

General Manager Network Operations

Warner joined Marlborough Lines in November 2016 and is responsible for the day-to-day operations of the Company’s network.Warner has substantial supply industry experience with over ten years at WEL Networks and most recently managing projects for various power companies through his own consultancy business.

Marlborough Lines

Scott Wilkinson

BSc Hons, MESt, MBA

Commercial Manager

Scott joined Marlborough Lines in April 2014 and is responsible for network pricing, maintaining the Company’s relationships with the energy retailers, and special project work. Scott’s background is primarily in consulting engineering, infrastructure projects and asset management.

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