We use some essential cookies to make this website work.
We’d like to set additional cookies to understand how you use GOV.UK, remember your settings and improve government services.
We also use cookies set by other sites to help us deliver content from their services.
You have accepted additional cookies. You can change your cookie settings at any time.
You have rejected additional cookies. You can change your cookie settings at any time.
Departments, agencies and public bodies
News stories, speeches, letters and notices
Detailed guidance, regulations and rules
Reports, analysis and official statistics
Consultations and strategy
Data, Freedom of Information releases and corporate reports
Review of the UK’s regulatory system for medical radioisotopes.
The Office for Nuclear Regulation is the UK’s independent nuclear regulator. Its mission is to protect society by securing safe nuclear operations. ONR is a public corporation of the Department for Work and Pensions .
GDA process enables regulators to assess new nuclear power station designs at an early stage of the regulatory process
This guidance explains the Generic Design Assessment (GDA) process for organisations who want to submit a nuclear power plant design for assessment.
Exemption, notification, registering and licensing of radioactive substances and radiation generators in the UK.
Fundamental assessment reports of the Generic Design Assessment (GDA) Step 2 for the GE Vernova Hitachi small modular reactor (SMR) nuclear power station design.
Fundamental assessment reports of the Generic Design Assessment (GDA) Step 2 for the Holtec SMR-300 reactor design.
A unique cross-sector collaboration has created an improved approach to the design and build of a key component in the nuclear industry.
Annual report on the exercise of powers under Part 3 of the Energy Act 2013, for the year ended 31 March 2025, covering the Office for Nuclear Regulation (ONR).
Environment Agency and Office for Nuclear Regulation report on their scrutiny of Nuclear Waste Services' work to develop geological disposal.
Do not include personal or financial information like your National Insurance number or credit card details.
To help us improve GOV.UK, we’d like to know more about your visit today. Please fill in this survey (opens in a new tab and requires JavaScript).