The document provides an overview of the Construction Design and Management (CDM) Regulations 2015 in the UK. It discusses the objectives of CDM, which are to protect the health and safety of construction workers and require a systematic management approach. It outlines the main duties of key roles including the client, principal designer, principal contractor, designer, and contractor. It also describes important CDM documents such as the construction phase plan, pre-construction information, and health and safety file.