The Fingleton Review: what the nuclear overhaul means for planning, environmental assessments and infrastructure reform more widely

The UK Government has announced a sweeping overhaul of its nuclear planning and regulatory system following the findings of the independent Nuclear Regulatory Taskforce led by John Fingleton. Although prompted by sector-specific challenges, the reforms also have wider significance to developers and investors working on major infrastructure, and the Government have made clear that the proposed reform programme has the potential to extend beyond the nuclear sector.

The review concluded that the current system is “overly complex” and “bureaucratic”, favouring process over safe outcomes and contributing to delay and cost escalation in major infrastructure delivery.

In response, the Government has published an implementation plan aimed at simplifying regulation, accelerating project timelines and reducing costs across both civil and defence nuclear sectors. Parallel proposals to amend environmental assessment regimes, revisit the Habitats Regulations and refine biodiversity net gain (BNG) suggest a broader recalibration of how major development is consented in England.

A “Golden Age of Nuclear”: Key Features of the Overhaul

The Fingleton Review identifies structural inefficiencies across the current regime, including duplication between regulators and an overly prescriptive approach to compliance. The Government’s response focuses on four key areas:

1. Streamlining nuclear planning and regulatory processes
   
   Regulatory pathways will be simplified and made more proportionate, with a shift towards “smarter regulation” and a “one-stop shop” for nuclear decisions. The emphasis is on risk-based, evidence-led decision-making, with less weight placed on procedural formality and greater focus on outcomes.
    
2. Accelerating delivery of major nuclear projects
   
   Projects such as Hinkley Point C, Sizewell C and emerging small modular reactor programmes are likely to benefit from reduced regulatory timelines and improved coordination between consenting bodies.
    
3. Supporting energy security and decarbonisation
   
   The reforms are framed as central to reducing reliance on global fossil fuel markets, strengthening domestic energy resilience and delivering low-carbon generation at scale.
    
4. Delivery of reforms by 2027
   
   The Government intends for the full package of regulatory reforms to be implemented by the end of 2027, signalling a relatively compressed transition period for both regulators and developers.

Environmental Assessment and Habitats Regulations: Major Changes Ahead

Alongside the nuclear overhaul, the Government is advancing a broader programme of environmental reform applicable across the industry. Proposals are under consideration across several key areas including:

• Streamlining environmental assessment regimes: the potential consolidation or simplification of existing environmental assessment requirements to reduce duplication and accelerate consenting for major infrastructure.
• Revisions to the Habitats Regulations: possible changes to how adverse effects on protected sites are assessed, including a shift towards more flexible or strategic mitigation approaches.
• Adjustments to BNG: reforms aimed at simplifying the operation of BNG, particularly for large-scale and nationally significant projects, and better integrating biodiversity obligations into delivery frameworks.

Judicial Review and the Wider Planning Framework

Proposals to streamline judicial review across the wider planning regime are also being considered. Such change would be significant. Judicial review has long played a central role in ensuring compliance with environmental law, particularly in relation to habitats protection and environmental assessment. A move towards limiting or streamlining challenges could alter the litigation landscape for major infrastructure projects.

At the same time, this raises questions around access to justice and the continued robustness of environmental safeguards, particularly where decision-making becomes more discretionary and less procedurally prescriptive.

Implications for Developers and Planning Authorities

• Faster consenting timelines: developers, particularly in the nuclear sector, are likely to benefit from reduced delays and a more predictable approvals process.
• A more integrated approach to environmental compliance:  changes to environmental assessments, habitats regulation and BNG may lead to a more consolidated and strategic approach to environmental obligations.
• Increased emphasis on risk-based regulation: decision-making is expected to focus more closely on project-specific risks and outcomes, rather than adherence to detailed procedural requirements.
• Greater reliance on evolving policy and guidance: as reforms are implemented, there may be a period of uncertainty while new frameworks bed in. Close attention will be required to emerging secondary legislation and updated regulatory guidance.

Looking Ahead

The Government’s response to the Fingleton Review marks a significant shift in the UK’s approach to regulating major infrastructure. While the immediate focus is on nuclear delivery, the accompanying environmental reforms point towards a broader transformation of the planning and environmental law landscape.

The direction of change is clear: simplify, accelerate and adopt a more flexible, outcomes-based model of regulation. The extent to which that model can maintain robust environmental protection while delivering infrastructure at pace will be a defining issue as the reforms are implemented over the coming years. There is also a question as to how these proposals fit into the wider consenting reform agenda being put forward by the Government – as so many changes being proposed at the same time arguably complicates rather than streamlines the system.

In any event, for practitioners, early engagement with the evolving legislative framework, and a clear understanding of how risk-based regulation will operate in practice, will be essential as the UK moves towards what the Government has described as a new era for infrastructure delivery.

Co-authored by Areesha Qureshi, Solicitor Apprentice