Our leadership team

Meet the leaders behind Sizewell C.

John Holland-Kaye, Non-Executive Chair

John has a strong track record of working with government, investors, and regulators, along with a deep commitment to local communities and sustainability. As the former CEO of Heathrow Airport, he brings a wealth of experience in delivering major infrastructure projects, including Terminal 2.

He joins us at a crucial time as construction ramps up and the project reaches new milestones, starting on 1st March 2025. Find out more in the press release here.

Julia Pyke, Joint Managing Director

Prior to her move to Sizewell C, Julia was Head of Power and Renewables for UK, US & Europe at Herbert Smith Freehills LLP.

Julia is a Fellow of the Energy Institute and an Honorary Fellow of the Nuclear Institute.

Nigel Cann, Joint Managing Director

Nigel has worked in the nuclear industry for 43 years with a uniquely diverse experience in engineering, operations and large-scale project management.

He has held plant manager positions at Dungeness B and Sizewell B and was Station Director at Hinkley Point B (HPB) leading the HPB plant recovery and life extension projects before becoming Hinkley Point C‘s Delivery Director.

David Gregg
Chief Financial Officer

David Gregg
Chief Financial Officer

David brings experience from UK-regulated water utilities, covering corporate finance and serving as Acting CFO. Previously, he worked in several international FTSE 250 groups in various finance roles.

Bertrand Michoud
Delivery Director

Bertrand Michoud
Delivery Director

Bertrand has led the Project Delivery teams since 2019. With 30 years of experience in the power industry, he previously served as Flamanville 3 Site Director before joining Sizewell C.

Sarah Hancock
Human Resources Director

Sarah Hancock
Human Resources Director

​Sarah leads our people, skills, industrial relations and inclusion agenda. A solicitor by background, and a Chartered Fellow of the CIPD, she's passionate about helping people reach their full career potential.

Mina Golshan CBE
Safety, Security and Assurance Director

Mina Golshan CBE
Safety, Security and Assurance Director

Mina joined SZC after 12 years at the Office for Nuclear Regulation. She has over 20 years' experience in nuclear and high-hazard industries in public and private sectors and holds a PhD in Physics.

Malcolm Dare
Supply Chain Director

Malcolm Dare
Supply Chain Director

Malcolm has 30+ years' experience in FMCG, capital equipment, nuclear submarines, defence, and infrastructure, along with 14+ years of Executive Team and strong business change management experience.

Sharmila Sylvester
General Counsel

Sharmila Sylvester
General Counsel

Sharmila is our General Counsel. A qualified solicitor, she brings extensive experience from Scotia Gas Networks Limited, specialising in infrastructure projects and multi-investor arrangements.

Xanthe Kueppers
Corporate Operations Director

Xanthe Kueppers
Corporate Operations Director

Xanthe leads the corporate strategy, integration of change programmes and process alignment to drive corporate maturity. A lawyer by background, she has spent six years at Sizewell C.

Tilly Spencer
Technical Director

Tilly Spencer
Technical Director

Tilly joined the project in 2024 from Edvance UK where she was Director for four years leading on design and engineering support to Hinkley Point C and Sizewell C.

Katherine Horrell
Treasury Director

Katherine Horrell
Treasury Director

Katherine has worked in corporate finance and treasury for over 20 years in a range of organisations. She joined us in 2024 to lead the implementation and ongoing management of our new financing arrangements.