© Copyright 2026 Sizewell C Limited. All rights reserved.
Who we are
Sizewell C Limited (“we”) are a company which will develop, construct, own, operate, maintain and decommission the nuclear new build power plant at the Sizewell C site in Suffolk. We are a registered private limited company (no. 09284825) and our registered address is at 25 Copthall Avenue, London, England, EC2R 7BP.
This notice applies to any third party who provides information to us. This may include visitors to our sites and contractors working with us, including agency supplied workers, managed service workers and embedded contractors. It does not apply to employees.
We respect your privacy and value the trust you place in us when you share your personal information with us. This notice sets out how we collect and use your personal information, why we use it, with whom we share it, the rights to which you may be entitled and your choices about our use of your personal information, that may arise from your interactions with us.
When consulting the website www.sizewellc.com (hereinafter referred to as “the Website“), certain information relating to your browsing may be recorded in “cookie” files installed on your terminal (computer, tablet, cell phone or any other internet-optimised device).
These cookies are issued by Sizewell C Limited (hereinafter referred to as Sizewell C) in order to facilitate your navigation on this website, for audience measurement purposes and so that you can interact with the social and digital modules on the Website (Facebook, Twitter, etc.).
This Policy allows you to understand what a cookie is, what its role is, and how to configure its operation.
What is a cookie?
A cookie is a text file which, thanks to your browser software, is deposited in a dedicated space on the hard disk of your device when you visit a site or view an advertisement. It contains several data such as the name of the server that deposited it (server of the site you visit), an identifier in the form of a unique number and possibly an expiration date of the cookie.
Cookies allow its issuer to recognise the user’s terminal with which it is registered and to collect information relating to its navigation on the websites.
What type of cookies are issued on this Website?
How long are the cookies stored on your device?
The cookies are stored on your device for as long as it is necessary for the fulfillment of the purposes described above. In particular:
© Copyright 2026 Sizewell C Limited. All rights reserved.
When this privacy notice applies
This privacy notice (“Notice”) applies whenever Sizewell C Limited (referred to in this Notice as “Sizewell C”, “we”, “our” or “us”) processes any personal data about visitors to our sites, members of the public, contractors working with or for us (including their employees), as well as employees of public body stakeholders, business partners and supply chain partners (“you” and “your“). In this Notice, “processing” personal data includes, for example, collecting it, using it, storing it or disclosing it to others.
This Notice explains how we collect and use your personal data, why we use it, the circumstances in which we may share it, and your rights in relation to your personal data.
Who we are
We are the company which will develop, construct, own, operate, maintain and decommission a nuclear new build power plant at the Sizewell C site in Suffolk. We are a registered private limited company (no. 09284825) and our registered address is at 25 Copthall Avenue, London, EC2R 7BP.
We are also registered as a data controller with the Information Commissioner’s Office, and our registration number is ZA451467.
Contact us
If you have any questions about this Notice, our processing of your personal data, wish to exercise any of your data protection rights, or otherwise wish to raise a data protection concern with us, please contact our Data Protection Officer by:
Keeping your personal data up-to-date
It is important that the personal data we hold about you is accurate and current. Please keep us informed if your personal data changes during your relationship with us.
How is your personal data collected?
We use different methods to collect data from and about you including through:
How we use your personal data
The law requires us to have a legal basis for collecting and using your personal data. We rely on one or more of the following legal bases:
What personal data do we collect, and why?
We have set out below, in a table format, a description of all the ways we plan to use the various categories of your personal data, and which of the legal bases we rely on to do so. We have also identified what our legitimate interests are where appropriate.
| What personal data may we collect? | Why? | Lawful basis under UK GPDR |
| Information about employees, site visitors and contractors | <||