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    Sizewell C moves to solo CEO: delivery and risk takeaways for project teams

    December 10, 2025|

    Reviewed by Tom Sullivan

    Sizewell C moves to solo CEO: delivery and risk takeaways for project teams

    First reported on The Construction Index

    30 Second Briefing

    Sizewell C will shift from joint leadership to a single chief executive on 1 January 2026, with current co-managing director Nigel Cann becoming CEO as the project passes final investment decision and financial close into its main construction phase. Cann brings 45 years of nuclear experience, including roles as plant manager at Dungeness B and Sizewell B and delivery director for Hinkley Point C until March 2023, which will be critical as major civils, marine works and nuclear-island construction ramp up. Co-managing director CEO Julia Pyke, who helped secure private investor and commercial bank backing for the multi-billion-pound project expected to supply around 7% of UK electricity, will step down at year-end.

    Technical Brief

    • Project is positioned to generate “thousands” of jobs and apprenticeships, implying substantial local construction labour demand in Suffolk.
    • Social value commitments include targeting employment for people previously excluded from work, affecting workforce training and site logistics planning.

    Our Take

    With Sizewell C expected to supply around 7% of UK electricity, governance changes such as moving to a solo CEO model from 1 January 2026 will be closely watched by regulators and contractors, as they affect decision speed on major EPC and civils packages in Suffolk and across the Hinkley Point C supply chain.

    Nigel Cann’s 45 years across Dungeness B, Sizewell B, Hinkley Point B and Hinkley Point C give Sizewell C continuity of nuclear-operations culture at a time when many of the 205 Infrastructure stories in our database highlight skills shortages and loss of institutional memory in large UK energy projects.

    Herbert Smith Freehills’ visibility in this transition signals that complex contractual and regulatory structuring remains a live issue for Sizewell C, which aligns with other Projects and Contract Award pieces in our coverage where legal advisers are being embedded earlier into nuclear and large energy project delivery teams.

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    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

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