Principal Contractor

What is a Principal Contractor?

A Principal Contractor under the Construction (Design and Management) Regulations 2015 is the Contractor with control over the construction phase of a project involving more than one Contractor.
The Principal Contractor is appointed in writing by the client (commercial or domestic) to plan, manage, monitor and co-ordinate health and safety during the construction phase of a project. This means working in close co-operation with the Client and the Principal Designer to ensure construction is carried out in a way that avoids harm to persons, property and reputation.

The role of the Principal Contractor involves:

  • Consulting and engaging with workers
  • Liaising with the Client and Principal Designer
  • Ensuring anyone they appoint has the necessary skills, knowledge, and experience and, where they are an organisation, the organisational capability to carry out the work in a way that secures health and safety
  • Co-ordinating the work of contractors
  • Ensuring that the contractors under their control co-operate with each other
  • Ensuring suitable site inductions are provided to all persons on site
  • Ensuring reasonable steps are taken to prevent unauthorised access
  • Ensuring that suitable welfare facilities are provided and maintained throughout the construction phase
  • Before the construction site is set up, preparing the Construction Phase Plan for the project setting out health and safety arrangements and site rules
  • Ensuring that the Construction Phase Plan is appropriately reviewed, updated and revised during the construction phase to adequately reflect the activities, risks and hazards on site
  • Providing the Principal Designer with any information in the Principal Contractor’s possession relevant to the Health and Safety File

If the Principal Designer’s appointment finishes before the end of the project, the Health and Safety File must be passed to the Principal Contractor for the remainder of the project. The Principal Contractor must then take on the responsibility for reviewing, updating and revising it and passing it to the Client when the Project finishes.

Where a client is a domestic client, the Principal Contractor must also carry out the duties of the client under the regulations, unless there is only one contractor (in which case the contractor must carry out their duties), or there is a written agreement that the Principal Designer will fulfill those duties.

When should a Principal Contractor be appointed?

The Principal Contractor should be appointed by the client as early in the project as possible and before the construction phase begins.
Planning is an essential part of managing a construction site and should start as early as possible to identify health and safety risks, control measures and resources needed to reduce or eliminate them. This approach should take place for all phases of the construction work. The Principal Contractor will also need to think about how they will monitor site health and safety standards and control measures so that they remain effective.
The Principal Contractor should be appointed as early as possible so that they can:

  • Allow time to plan the work of the construction phase and, in liaison with the Principal Designer and others involved in the project, identify any risks to health and safety and the control measures which need to be put in place
  • Record details of any planning in a Construction Phase Plan
  • Work with the Client for the duration of their appointment
  • Liaise with the Principal Designer for the remainder of their appointment for the purposes of planning, managing, monitoring, and coordinating the pre-construction phase

The effort devoted to planning should be proportionate to the complexity of the project and the level of risks involved.

How can Peligro help me?

Peligro Group offer the complete CDM service to clients involved in all type of work from demolition, through to new build and refurbishments projects. Peligro can provide a Principal Designer to all size of project. We provide:

  • Advice and assistance to client’s to ensure they are fully aware of their duties and meet their obligations.
  • Competence checks on designers, contractors and sub contractors prior to them being appointed on behalf of the client.
  • Notification to the Health & Safety Executive both during the initial design stages and prior to any construction works commencing.
  • Production of pre-construction information to designers and contractors.
  • Co-ordination of health and safety aspect of design and provide a proactive risk management approach with the potential to save money, time and resources.
  • Facilitation of good communication between the client, designers and contractors.
  • Liaison with principal contractor regarding on going design.
  • Preparation of Health & Safety file at the end of the project covering all the major health and safety issues.

In addition to the above, we also recommend and can provide on site monitoring of the Principal Contractor to ensure they are working in a safe manner and in accordance with current legislation.

For further information relating to the role of the Principal Designer please contact Peligro on 0114 212 5505 or email [email protected].

Why Peligro?

Peligro offer a fresh bespoke approach to health and safety consultancy. We have the skills, experience and flexibility to meet the ever changing demands of health and safety within your business. We set out to make sure you comply with health and safety legislation with the minimum of fuss and leave the owner/manager time to focus on those areas they prefer to work on.

Merger Announcement!

Safe Track Associates Limited and Peligro Risk Management Group have merged! This merger has enabled the two companies to combine their unique market knowledge and assets into a single stronger company that can better serve the needs of our new and existing customers. Both companies share resources and are familiar with each other’s products and services which has facilitated a smooth transition.  

Official communication is through Peligro Risk Management Group. Contact details can be found on the website To see what we have been up to or to contact us via social media, follow us on Facebook, Twitter or LinkedIn  

“By combining our two great companies that share common roots and market goals, we are positioned to make a positive difference in even more clients through our expansion,” says Managing Director, Leigh Johnston. “Our team of professionals are prepared to deliver the very best health and safety services to our existing and new clients.”