The new CDM regulations came into effect on April 6th 2015, after five years of review. The purpose of the regulations is to 'prevent the ill health or death of construction and maintenance operatives, while also allowing for the delivery of good design'. One of the new regulations most notable changes to work towards this is introducing the role of 'Principal Designer' which is not meant to directly replace the CDM coordinator because the duties vary but the coordinator role has been removed. The Principal Designer is responsible for planning, managing, monitoring and coordinating the health and safety in the pre-construction phase of a project including identifying, eliminating or controlling foreseeable risks, ensuring designers carry out their duties and to provide relevant information to the principal contractor so they can carry out their construction safely. Other key changes include a duty to make sure all persons doing the job have the right skills, knowledge, training and experience and that both a principal designer and principal contractor must be appointed on projects with more than one contractor.