Sizewell C Nuclear Power Station

Sizewell C is being delivered under a Regulated Asset Base funding model, requiring rigorous governance, transparency and demonstrable value for money. As construction activity scales up, numerous contractors and workstreams must operate across a constrained site, creating complex commercial and delivery interfaces. Maintaining cost confidence and programme certainty requires robust controls, coordinated stakeholder engagement and clear decision-making. The challenge is to manage these demands while providing the assurance needed to support investment and delivery across a major infrastructure programme.

G&T is providing a broad range of Cost Management, Commercial Management, Project Management and Construction Management services, combining experienced professionals embedded within client delivery teams with specialist advisory and assurance expertise. Our involvement spans commercial management, NEC contract administration, procurement, estimating assurance, Target Outturn Cost reviews, risk management and commercial governance. Working collaboratively with project teams and senior stakeholders, we provide the commercial expertise, independent challenge and practical delivery support needed to manage complex contractual arrangements, strengthen cost controls and support informed decision-making.

Once operational, Sizewell C will provide a major source of low-carbon electricity, supporting the UK’s energy security and net-zero ambitions. G&T's involvement is helping Sizewell C strengthen commercial governance, improve cost transparency and manage commercial risks across an increasingly complex construction programme. Our integrated approach provides the client with experienced delivery resources and specialist expertise, supporting greater confidence in cost forecasts, contractual management and investment decisions. By combining practical delivery support with strategic commercial advice, G&T is helping the programme maintain commercial accountability, address emerging challenges and demonstrate value for money as construction progresses, supporting the successful delivery of one of the UK's most significant infrastructure investments.