CDM 2015 – fit for purpose a decade on?

More than a decade after introduction, the Construction (Design and Management) Regulations 2015 remain a cornerstone of health and safety management in the UK construction industry. Introduced to simplify regulatory requirements, reduce unnecessary bureaucracy and modernise risk management across projects of all scales, CDM 2015 represented a significant evolution in approach.

The Health and Safety Executive (HSE) has now released its second Post-Implementation Review. Its central conclusion is that CDM 2015 continues to be fit for purpose and will remain in force without fundamental legislative reform. Nevertheless, the review highlights persistent challenges in implementation, including widespread confusion, inconsistent application and a tendency towards procedural compliance at the expense of meaningful safety outcomes.

Designed to replace the 2007 regulations, CDM 2015 sought to integrate health and safety considerations earlier in the design process, promote effective collaboration among dutyholders and create a more proportionate regime – particularly for small and micro-enterprises, which form much of the sector.

Key reforms included the abolition of the CDM Coordinator role, the introduction of the Principal Designer (PD), simplified notification procedures and a stronger emphasis on competence and cooperation. The HSE’s review concludes that many of these objectives have been substantially achieved, with measurable improvements in health and safety coordination across the industry.

The Principal Designer role: persistent difficulties

The most significant area of concern identified in the review is the Principal Designer role. Intended to ensure that health and safety risks are addressed proactively during the pre-construction phase, the role has encountered considerable implementation challenges in practice. Stakeholders report ongoing uncertainty regarding the required level of competence, the precise scope of responsibilities, and the importance of timely appointment. In many cases, Principal Designers are appointed late in the process – often immediately prior to construction commencement – which restricts their ability to influence design decisions and eliminate risks at source.

Compounding this issue is the commoditisation of the role in some parts of the market, with reports of inadequately qualified individuals offering low-cost services following brief training courses. This has led to a perception in certain quarters that the appointment is primarily a compliance exercise rather than a substantive contribution to risk management.

The introduction of a separate Principal Designer role under the Building Safety Act 2022 has added further complexity, creating overlap and confusion between two distinct but similarly titled statutory positions.

The persistence of bureaucracy

Although CDM 2015 was explicitly intended to reduce bureaucracy, the review finds that excessive documentation and administrative practices remain commonplace. Stakeholders frequently cite the use of generic, copy-and-paste materials, disproportionately large health and safety files and risk information that lacks relevance to the specific project.

The core issue has shifted from the generation of information to its effective management and usability. Documents are often fragmented across disparate systems and fail to deliver practical value to those who need them. The HSE stresses the importance of adopting proportionate, project-specific and outcome-focused approaches to information management.

A recurring finding is the variable level of understanding among clients regarding their statutory duties under CDM 2015. Many clients continue to view health and safety responsibilities as fully delegable, despite clear legal requirements to the contrary. This misunderstanding is sometimes exacerbated by the involvement of third-party client advisers.

Given that effective implementation of CDM 2015 depends heavily on informed and engaged clients from project inception, this remains a critical area for improvement.

The review also considers the broader impact of the Grenfell Tower tragedy, the Hackitt Review and subsequent legislative changes. These developments are generally viewed positively for reinforcing accountability and promoting better lifecycle information management, including the golden thread principle.

While the two regimes are seen as complementary, the industry continues to navigate the challenges of operating within overlapping regulatory frameworks. The HSE advocates enhanced guidance to support dutyholders, rather than structural legislative merger.

Conclusion: Implementation remains the priority

The HSE has elected not to recommend major legislative amendments, affirming that the existing framework is fundamentally sound. Attention must now focus on improving implementation through:

•  Earlier appointment of competent Principal Designers

•  Clearer guidance on roles, responsibilities, and competence requirements

•  More effective and proportionate information management

•  Greater client awareness and leadership

•  Strengthened collaboration across dutyholders.

While the decision to retain the current regulations will be welcomed by an industry that has experienced considerable regulatory change, the review serves as a clear reminder that cultural and behavioural improvements are still required. Ten years on, CDM 2015 provides a solid foundation.