Sophie Bennett, Associate at Holmes & Hills Solicitors, discusses the Construction (Design and Management) Regulations 2015, explaining the key responsibilities placed on clients, designers and contractors to help ensure health and safety throughout construction projects.
Every year, construction workers across the UK face serious risks including falls from height, being struck by moving vehicles, structural collapses, and exposure to harmful substances. In response to the pneed for evolving safety standards, the Construction (Design and Management) Regulations 2015 (CDM 2015) were introduced to replace the earlier CDM 2007 regulations. These regulations are the foundation for health and safety law governing construction projects in the UK.
The CDM 2015 came into force on 6 April 2015 and apply to all construction projects, regardless of size or duration. Their aim is to ensure that health and safety is considered throughout the entire lifecycle of a construction project. The regulations place specific duties on key parties, such as the client and the contractor, involved in a project, ensuring that responsibility for safety does not rest with a single entity but is shared across the project team.
The regulations are enforced by the Health and Safety Executive (HSE) and are supported by accompanying guidance documents, which provide advice on compliance.
One of the defining features of the CDM 2015 is the allocation of responsibilities among five key dutyholders:
The individual or organisation for whom the construction work is carried out. Clients must ensure that suitable management arrangements are in place, that adequate time and resources are allocated, and that relevant information is provided to other duty holders. Under CDM 2015, domestic clients also have duties, though these are usually transferred to other duty holders such as the contractor or principal designer.
Appointed by the client on projects involving more than one contractor, the principal designer is responsible for planning, managing, monitoring, and coordinating health and safety during the pre-construction phase. This role is usually ‘taken-over’ by the Contractor once the Building Contract is entered into and the construction phase starts.
Anyone who prepares or modifies designs for a construction project. Designers must eliminate, reduce, or control foreseeable risks that may arise during the construction or the maintenance of the completed build.
Appointed on projects with more than one contractor, the principal contractor is responsible for planning, managing, monitoring, and coordinating health and safety during the construction phase. They must also ensure that a construction phase plan is in place before work begins.
Any individual or organisation carrying out construction work. All contractors must plan, manage, and monitor their own work to ensure it is carried out safely and without risk to health.
The construction phase plan must be prepared by the principal contractor (or the sole contractor on single-contractor projects) before the construction phase begins. It sets out the arrangements for managing health and safety risks throughout the build.
The health and safety file is prepared by the principal designer and handed to the client upon project completion. It contains information needed for future maintenance, repair, renovation, or demolition of the structure, ensuring that safety considerations extend well beyond the initial build.
Statistics from the HSE consistently highlight the dangers of construction work. The CDM Regulations 2015 are designed to combat these dangers by establishing a culture of safety planning and cooperation from the earliest stages of a project.
By requiring active collaboration between clients, designers, and contractors, the regulations ensure that risks are identified and mitigated before they materialise on site. The emphasis on risk management prior to entering the construction phase is particularly important, as many hazards encountered during construction can be significantly reduced through well-considered design choices.
The CDM 2015 represents a robust and practical framework for managing health and safety in the construction industry. It demands accountability at every level, from the client procuring the work to the contractor wielding the tools on site. By embracing the principles of CDM 2015 and the increased health and safety considerations under developing legislation such as the Building Safety Act 2022, the industry can continue to drive down accidents, protect its workforce, and deliver projects that are safe both during construction and in the future.
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Disclaimer
The content of this article is provided for general information only. It does not constitute legal or other professional advice. The information given in this article is correct at the date of publication.







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