Around 18,000 people are working directly for the project in Britain.
Around 12,000 are working on the site itself, with 3,000 more expected in the next 12 months.
With the fit-out phase accelerating, an additional 8,000 people are supporting the project as part of the supply chain, including factories in Bristol, Somerset, Wales and right across the country.
The project is sending out major economic ripples across Britain — especially in the South West.
Fresh figures from the 2025 Socio-Economic Report show £5.3bn has now been spent with suppliers in the South West alone, helping to supercharge local growth and skills.
A British supply chain of over 4,000 firms has now built up the skills and capacity to feed into future new nuclear jobs at Sizewell C and small modular reactor schemes.
Map shows location of people across Britain supporting Hinkley construction
The report highlights firms already growing their workforces and winning jobs beyond Hinkley Point C on projects like Sizewell C.
Stuart Crooks, Managing Director at Hinkley Point C, said: “Our investment to re-establish nuclear skills in Britain has paved the way for our twin project at Sizewell C as well as the development of small modular reactors.
“It will give Britain the expertise to deliver the infrastructure it needs for growth and future prosperity.”
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