Planned Nuclear Regulation Shake-Up Aims to Unlock Investment and Speed Up UK Projects

The UK’s next wave of nuclear power projects could become faster to deliver and more attractive to investors under sweeping regulatory reforms expected to be introduced through a new Nuclear Regulation Bill.

Announced in the King's Speech, the legislation is set to overhaul how civil nuclear projects are regulated, following growing concerns that the UK's current approval process is too slow, too complex and too expensive.

The reforms are based on recommendations from John Fingleton's Nuclear Regulatory Taskforce, which concluded that the existing system has become one of the biggest obstacles to delivering new nuclear capacity. The Government has accepted all 47 recommendations made by the review and has pledged to implement them by the end of 2027, subject to parliamentary approval.

Why change is needed

For years, developers and investors have argued that regulatory uncertainty has significantly increased the cost of building new nuclear facilities in Britain.

The Taskforce identified three underlying issues that continue to drive delays and rising costs:

• An increasingly risk-averse regulatory culture.

• Excessive focus on regulatory process rather than project outcomes.

• A lack of incentives encouraging regulators and developers to deliver decisions efficiently.

The proposed legislation aims to address these challenges by creating a more streamlined regulatory environment while maintaining the UK's internationally recognised safety standards.

One system instead of many

One of the most significant proposals is the creation of a new Commission for Nuclear Regulation.

Rather than replacing existing organisations, the Commission would coordinate decision-making between bodies such as the Office for Nuclear Regulation (ONR), the Environment Agency, planning authorities and government departments.

Developers currently have to navigate several independent approval processes, often resulting in duplicated work and lengthy delays. The Commission is intended to provide a single strategic oversight of the regulatory process while allowing the ONR to continue carrying out licensing and operational safety responsibilities.

Faster environmental approvals

The reforms also propose significant changes to environmental assessments.

Developers could be offered greater flexibility when mitigating environmental impacts, including the possibility of making financial contributions towards environmental improvements rather than relying solely on traditional mitigation measures.

Supporters believe this could reduce delays for nationally significant infrastructure, although any changes are likely to attract close scrutiny from environmental organisations concerned about maintaining existing protections.

Updating decades-old safety rules

Another key recommendation focuses on modernising how nuclear risk is assessed.

Current UK guidance is largely based on frameworks developed following the Sizewell B inquiry during the 1980s and was written around large conventional nuclear power stations.

The Taskforce argues that these standards no longer fully reflect the capabilities of modern reactor technologies, including small modular reactors (SMRs) and advanced modular reactors (AMRs), many of which incorporate passive safety systems and significantly different operating characteristics.

Updating these risk models could allow regulators to apply the long-standing ALARP (As Low As Reasonably Practicable) principle more proportionately while maintaining high safety standards.

Opening the door to international collaboration

The reforms also seek to improve cooperation between the UK and overseas nuclear regulators.

Rather than repeating lengthy design assessments for reactors already reviewed abroad, future approvals could increasingly recognise work carried out by trusted international regulators.

Similar collaborative approaches are already underway across Europe, while the International Atomic Energy Agency continues to develop global harmonisation programmes aimed at accelerating deployment of new reactor technologies.

Greater international recognition could significantly shorten approval times for reactor designs entering the UK market.

Legislation alone will not solve everything

Industry experts have welcomed the proposed reforms but caution that changing legislation is only part of the solution.

The success of the reforms will also depend on regulators having sufficient resources, specialist expertise and a willingness to adopt a more proportionate approach without compromising safety.

Skills in areas such as digital engineering, modular construction and advanced reactor technologies will become increasingly important if regulators are to keep pace with the next generation of nuclear projects.

If implemented successfully, the reforms could help reduce financing costs, strengthen confidence across the supply chain and create a more predictable pipeline of projects.

That would not only support the UK's ambitions to expand nuclear generation but could also position Britain as a more competitive destination for investment in advanced nuclear technologies.