Nuclear Reporting for UK Journalists

Last reviewed: 13 June 2026Next review due: 13 December 2026

What is the nuclear beat?

Nuclear journalism in the UK covers three broad areas: the existing civil nuclear fleet and its regulation; the new build programme (Hinkley Point C under construction; Sizewell C in development); and the decommissioning and waste management legacy. All three are significant public expenditure stories — the NDA's estimated decommissioning liability exceeds £100 billion, Hinkley Point C has experienced cost overruns that have made it one of the most expensive infrastructure projects in UK history, and the long-running challenge of finding a site for permanent radioactive waste disposal remains unresolved.

Nuclear is also an energy policy story: the UK government has made nuclear a central part of its net zero electricity strategy, requiring journalists covering energy policy to understand the nuclear sector. The beat intersects with energy, environment, defence, and public spending journalism.

Key organisations and contacts

Office for Nuclear Regulation (ONR)

Independent nuclear safety regulator; publishes inspection reports, enforcement notices, and annual reports.

Nuclear Decommissioning Authority (NDA)

Government-owned body responsible for decommissioning the civil nuclear legacy; publishes accounts and strategy.

EDF Energy UK

Operator of the UK operational nuclear fleet and developer of Hinkley Point C and Sizewell C.

Radioactive Waste Management (RWM)

NDA subsidiary managing the Geological Disposal Facility siting process and community engagement.

Great British Nuclear

Government-owned company overseeing Small Modular Reactor development and nuclear new build strategy.

Department for Energy Security & Net Zero

Lead government department for energy policy including nuclear; publishes nuclear strategy documents.

World Nuclear Association

International industry organisation publishing data on global and UK nuclear operations and economics.

Greenpeace UK

Major NGO publishing critical analysis of nuclear cost, safety, and waste — useful for accountability perspective.

Key data sources for nuclear reporters

ONR — Site Inspection Reports ↑

Published nuclear site inspection reports and enforcement notices for all licensed sites.

NDA Annual Report and Accounts ↑

Annual published accounts including decommissioning liability estimates and programme costs.

EDF Energy — Nuclear Operations ↑

EDF's published operational data for UK power stations and Hinkley Point C project updates.

Infrastructure Projects Authority ↑

Annual RAG status ratings for major government projects including nuclear — published in the IPA Annual Report.

World Nuclear Association ↑

Global nuclear data, country profiles, and UK-specific operational and economic statistics.

DESNZ — Nuclear Policy ↑

Nuclear strategy documents, Sizewell C documents, and Great British Nuclear programme publications.

Specialist skills for nuclear reporters

1Radiation and nuclear literacy: understanding the difference between dose (Sieverts), radioactivity (Becquerels), and contamination; the difference between nuclear safety and nuclear security; and the regulatory framework of ONR site licences.
2Public spending analysis: Hinkley Point C and NDA decommissioning are among the largest capital commitments in UK public finance. Reading Infrastructure Projects Authority assessments, NAO reports, and NDA annual accounts is essential.
3Regulatory document literacy: ONR Enforcement Notices and Site Assessment Reports are technical regulatory documents. Understanding what they mean and what their publication signals takes familiarity with ONR regulatory language.
4Source management in a sensitive sector: nuclear journalists often rely on anonymous sources inside regulated organisations. The regulatory and commercial sensitivity of nuclear information means source protection is particularly important.
5Long-term story tracking: nuclear stories — Hinkley, Sellafield cleanup, GDF siting — span decades. Build a file on each and review it regularly, not only when the story breaks.

Ethics and legal risks

Accuracy in radiation and risk reporting

Nuclear journalism has a long history of both overstating and understating risk. Present radiation dose levels in context — against background radiation, against regulatory limits, and against comparative risks — rather than as isolated numbers. Avoid loading language ('deadly radiation', 'toxic waste') without scientific justification. Equally, avoid minimising risks that regulatory assessments take seriously. The ONR publishes its own risk assessments — use them as primary references.

National security considerations

Nuclear security — physical protection of materials, safeguards, transport security — is a national security matter. The DSMA (Defence and Security Media Advisory) notice system may apply to some aspects of nuclear security reporting. Journalists are not bound by DSMA notices but should be aware of them and should not publish information that puts physical nuclear security at risk. See /beats/defence-security-reporting for context.

Source protection in regulated industries

Whistleblowers in the nuclear industry face significant institutional pressure. ONR-regulated sites are required to have safety reporting mechanisms, but industry workers who speak to journalists may face professional consequences. Apply rigorous source protection measures at /ethics/anonymous-sources and /law/source-protection.

Defamation in cost and safety investigations

Nuclear investigations that allege specific failings by named companies or individuals — cost misrepresentation, safety breaches — carry significant defamation risk. Ensure all factual allegations are grounded in regulatory documents, NAO reports, or other primary sources. Always offer right of reply before publication. See /law/right-of-reply.

Common stories on the nuclear beat

Hinkley Point C cost and schedule: EDF quarterly updates, Infrastructure Projects Authority RAG ratings, and independent cost analysis from the NAO.
NDA decommissioning cost trajectory: the annual revision of the NDA lifetime liability estimate and what drives changes in the programme cost.
Sellafield cleanup: the specific technical and safety challenges at the UK's most contaminated nuclear site, and the pace of progress against NDA milestones.
Geological Disposal Facility siting: which communities are participating, the timeline for site selection, and the regulatory approvals required before any GDF is built.
ONR enforcement: which nuclear sites have received enforcement notices and what regulatory failures they document.
Small Modular Reactors: Great British Nuclear's SMR competition and the commercial and regulatory pathway for SMRs in the UK.
Nuclear workforce skills gap: whether the UK has sufficient nuclear-qualified engineers and safety specialists to support both new build and decommissioning simultaneously.

Practical checklist for nuclear reporters

Bookmark the ONR publications page and set an alert for new enforcement notices and site inspection reports.
Download the NDA Annual Report and Accounts on publication — pay particular attention to the decommissioning liability estimate and any changes from the prior year.
For Hinkley Point C stories, cross-reference EDF press releases with IPA project assessments and NAO reports.
Always contextualise radiation dose figures against background radiation levels and ONR dose limits.
When covering a nuclear incident, use ONR's International Nuclear and Radiological Event Scale (INES) ratings as the primary framework for severity assessment.
Apply rigorous source protection to any whistleblower or insider source in the nuclear sector.
Before publishing any allegation of a regulatory breach, confirm it against ONR enforcement records.

Common mistakes

1. Using radiation dose figures without providing context — a dose level that sounds alarming may be well below regulatory limits and comparable to a transatlantic flight.

2. Conflating nuclear safety (reactor and waste safety) with nuclear security (material theft, terrorism) — these are regulated separately and involve different risk profiles.

3. Presenting Greenpeace and the World Nuclear Association as equivalent sources — both are advocacy organisations; balance industry and environmental advocacy with ONR and NDA regulatory data.

4. Treating a single ONR inspection issue as evidence of a systemic safety failure — read the full site assessment context, not just the enforcement action.

5. Ignoring the decommissioning story in favour of new build — the NDA programme is the largest and most complex nuclear challenge in the UK, and consistently underreported.

Red flags

An NDA programme cost estimate that has increased significantly year on year without a clear public explanation — merits detailed FOI and NAO analysis.
An ONR enforcement notice for a site that has previously received multiple warnings on the same issue — a pattern of persistent non-compliance is an accountability story.
A nuclear new build project where the Infrastructure Projects Authority has issued a red or amber/red RAG rating — this signals the project is not on track to deliver value for money.
A GDF community engagement process where documentation of community decision-making is not publicly available — all Working Group deliberations should be transparent.

Frequently asked questions

What is the Office for Nuclear Regulation and what does it publish?

The Office for Nuclear Regulation (ONR) is the UK's independent nuclear safety regulator, established under the Energy Act 2013. It regulates civil nuclear sites (power stations and research reactors), nuclear transport, and nuclear security. ONR publishes site inspection reports, regulatory assessments, and enforcement notices — all of which are primary sources for nuclear journalists. ONR also issues Nuclear Enforcement Notices when operators fall short of regulatory standards. The ONR Annual Report gives an overview of regulatory activity across the sector. ONR has powers to investigate nuclear incidents and must be notified of events meeting specific reporting thresholds.

What is the difference between Hinkley Point C and Sizewell C?

Hinkley Point C (HPC) is a new nuclear power station under construction in Somerset by EDF Energy. It is the UK's first new nuclear build in a generation and is expected to provide about 7% of UK electricity when operational. HPC has experienced significant cost overruns and schedule delays — understanding the trajectory of these costs is essential for accountable energy journalism. Sizewell C is a proposed nuclear power station in Suffolk, also EPR reactor design. The Sizewell C project company is working through the planning and financing process, with the UK government holding an equity stake via Great British Nuclear. Both projects are distinct from the operational fleet — which is managed by EDF Energy UK across existing stations.

What is the Nuclear Decommissioning Authority and why does it matter?

The Nuclear Decommissioning Authority (NDA) is the government-owned body responsible for decommissioning and cleaning up the UK's civil nuclear legacy. This covers a fleet of older Magnox and AGRS sites, as well as the Sellafield complex in Cumbria — the most complex and costly nuclear cleanup anywhere in the world. The NDA's total estimated liability for decommissioning runs to over £100 billion. It is responsible for interim storage of intermediate and high-level radioactive waste and for making the case for a Geological Disposal Facility (GDF) for permanent storage of higher activity wastes. The NDA publishes annual accounts, strategy documents, and nuclear material balances — all essential primary sources.

What is the Geological Disposal Facility and why is it controversial?

A Geological Disposal Facility (GDF) is a proposed deep underground repository for the permanent storage of higher activity radioactive waste. The UK does not yet have a GDF — it is currently at the community engagement stage, with several potential host communities in West Cumbria and Lincolnshire considering whether to participate in the siting process. The GDF is controversial because no community necessarily wants a nuclear waste repository near it, and because the scientific and engineering challenges of safely storing radioactive material for thousands of years are significant. The Radioactive Waste Management Limited (RWM) body manages the siting process and publishes regular updates and community engagement documentation.

How should journalists handle nuclear risk and radiation language?

Nuclear journalism is particularly prone to technical language being used imprecisely in ways that either overstate or understate risk. Key points: always use correct units (Sieverts for dose, Becquerels for radioactivity); contextualise dose levels against background radiation and regulatory limits rather than presenting raw numbers; distinguish between nuclear safety (reactors and radioactive waste) and nuclear security (proliferation, terrorism); and distinguish between routine emissions within permitted limits and exceedances of those limits. The Health and Safety Executive and ONR publish guidance on dose assessment. Do not use 'radiation leak' as a synonym for 'radioactive release' — the terms have different technical meanings.

What FOI angles work well on the nuclear beat?

Productive FOI angles include: ONR enforcement notices and regulatory assessments for specific sites — available on the ONR website but correspondence can be FOI-requested; NDA annual accounts and liability estimates — these are published but supplementary analysis from the Infrastructure and Projects Authority can be FOI-requested; EDF Energy operational performance data submitted to ONR; Radioactive Waste Management GDF siting process correspondence — community engagement documents and government communications; and Department for Energy Security and Net Zero (DESNZ) correspondence on Hinkley Point C cost oversight and Sizewell C financing arrangements.