At Fiontar Group, we provide expert support for both PSDP and Principal Designer roles, ensuring full compliance with design-stage health and safety regulations in Ireland and the UK. Whether your project is in Dublin, Belfast, or London, our team helps you meet legal obligations under both Irish and UK construction safety laws.
In this article, we’ll clarify the difference between the Project Supervisor Design Process (PSDP) role in Ireland and the Principal Designer role in the UK, and show how Fiontar Group can support your team with end-to-end compliance.
What Is the PSDP Role in Ireland?
The Project Supervisor Design Process (PSDP) is a legally required appointment under Ireland’s Safety, Health and Welfare at Work (Construction) Regulations 2013. The PSDP is responsible for managing health and safety during the design phase of a construction project, ensuring that risks are identified, reduced, or eliminated early on.
Key Responsibilities of the PSDP:
- Hazard Identification & Risk Assessment: Ensure all design-related risks are assessed and controlled.
- Coordination: Promote communication between designers, contractors, and clients.
- Health and Safety Plan: Develop a project-specific plan that outlines safety controls and responsibilities.
- Compliance Monitoring: Verify that all design team members follow their safety obligations under the law.
- Safety File Preparation: Oversee the preparation of the safety file for the client.
What Is the Principal Designer Role in the UK?
In the UK, under the Construction (Design and Management) Regulations 2015 (CDM 2015), the equivalent role is known as the Principal Designer. This duty holder is responsible for planning, managing, and monitoring health and safety during the pre-construction phase.
Key Responsibilities of the Principal Designer:
- Design Risk Management: Coordinate risk assessments among all designers.
- Information Sharing: Ensure pre-construction information is provided and acted upon.
- Health and Safety Coordination: Communicate safety expectations to the principal contractor.
- Legal Compliance: Advise the client on their duties under CDM 2015.
- Liaison: Coordinate across the design and construction teams to embed safety into all stages of the project.

PSDP vs. Principal Designer – Key Differences at a Glance
| Feature | PSDP (Ireland) | Principal Designer (UK) |
|---|---|---|
| Legislation | Safety, Health & Welfare at Work (Construction) Regulations 2013 | CDM Regulations 2015 |
| Focus Phase | Design phase | Pre-construction phase |
| Appointed By | Client | Client |
| Legal Requirement | Yes (for most projects) | Yes (if more than one contractor involved) |
| Core Duties | Risk management, coordination, safety planning | Health & safety planning, information management |
How Fiontar Group Supports PSDP and Principal Designer Roles
With offices in Dublin, Belfast, and London, Fiontar Group is ideally positioned to support clients with cross-border projects. We have a proven track record in fulfilling both the PSDP and Principal Designer responsibilities in accordance with national laws.
Our Services Include:
- Full Regulatory Compliance: Guidance through Irish and UK safety legislation.
- Tailored Safety Plans: Bespoke Safety and Health Plans or Pre-Construction Information packages.
- Design Risk Management: Early-stage hazard identification and mitigation strategies.
- Communication Facilitation: Stakeholder coordination to ensure safety is a shared responsibility.
- Documentation & Reporting: Complete management of safety files, reports, and audits.
Do You Need a PSDP or Principal Designer?
If your project involves multiple contractors, design risks, or a complex scope, you are likely legally required to appoint a PSDP in Ireland or a Principal Designer in the UK. Not sure? Our experts can advise you in minutes.
Contact Fiontar Group Today
Ready to ensure safety compliance from the design stage onward? Whether your project is based in Ireland or the UK, Fiontar Group can act as your PSDP or Principal Designer, helping you meet your legal obligations efficiently and effectively.
Call us today or email, or simply contact us to schedule a free consultation.
