The History of the CDM Regulations: 1994 to 2015

A practical guide for UK site managers, contractors and small builders.

The Construction (Design and Management) Regulations have been part of UK construction law for three decades, and they have been rewritten twice in that time. If you have ever wondered why people talk about CDM 1994, CDM 2007 and CDM 2015 as if they were different things, it is because they are: each was a full revision that changed who carries duties and how much paperwork a project needs. This guide walks through that history in plain terms, explains what changed at each step, and makes clear which version applies to your work today.

What the CDM regulations are

CDM stands for Construction (Design and Management). The regulations place legal duties on the people involved in a construction project, from the client who commissions the work through to the contractors who carry it out, with the aim of managing health and safety risk from the earliest design decisions rather than only once boots are on site. They apply to almost all construction work in Great Britain, and understanding where they came from helps explain why the current version is shaped the way it is.

CDM 1994: the first version

The first set of CDM regulations came into force in 1994. They were introduced to implement a European directive on health and safety at construction sites and represented a real shift in thinking, because for the first time the law required health and safety to be planned into a project from the design stage, not treated as something to sort out once work started. The 1994 regulations introduced the idea of a planning supervisor, a health and safety plan and a health and safety file, and set duties on clients, designers and contractors.

In practice the 1994 regime was widely criticised for being complicated and for generating a great deal of paperwork that did little to improve actual safety on site. The role of planning supervisor in particular was seen as poorly understood, and many smaller projects ended up producing documents for their own sake rather than managing genuine risk.

CDM 2007: the first rewrite

To address those problems the regulations were rewritten and replaced in 2007. CDM 2007 scrapped the planning supervisor and introduced the CDM co-ordinator, a role intended to advise and assist the client on health and safety matters and to co-ordinate the flow of information across the project. The 2007 version also folded in the old Construction (Health, Safety and Welfare) Regulations, bringing the physical site standards and welfare requirements into the same body of law.

CDM 2007 was supported by an Approved Code of Practice, which carried a special legal weight: if you did not follow it you had to show you had complied with the law some other way. Despite the tidy-up, the 2007 regime was still felt to be too bureaucratic and the CDM co-ordinator role was criticised for being bolted on rather than embedded in the project team, which set the stage for another rewrite.

CDM 2015: the current version

The regulations were rewritten again and replaced by CDM 2015, which came into force on 6 April 2015 and is the version in force today. The headline change was the removal of the CDM co-ordinator and the creation of the principal designer, a duty holder drawn from the existing design team who is responsible for planning, managing and co-ordinating health and safety during the pre-construction phase. The idea was to put health and safety leadership in the hands of people already shaping the project rather than a separate appointee.

CDM 2015 also extended the regulations to domestic clients, sharpened the duties on the client, and placed a strong emphasis on proportionality, making clear that the effort put into managing a project should match its size and risk. The Approved Code of Practice was withdrawn and replaced with plain guidance, published as L153, which explains how to meet the duties without the extra legal machinery of the old code.

Which version applies today

Only CDM 2015 applies today. CDM 1994 and CDM 2007 have both been revoked and have no legal force on current work, so any project you take on now is governed by the 2015 regulations. The main reason the older versions still come up is that a lot of guidance, training material and web content written years ago has never been updated, which can leave people reading about planning supervisors and CDM co-ordinators that no longer exist. If you are looking up your duties, make sure the source you are reading is written for CDM 2015 and refers to the client, principal designer, designers, principal contractor and contractors rather than the older roles.

Frequently asked questions

This article is general guidance for UK construction and is not legal advice. For requirements specific to your work, check the full text of CDM 2015 and current HSE guidance L153, along with your own duty holder obligations.