Introduction This Practice Note covers environmental compliance related to the operation of offshore installations/infrastructure in England and Wales. This is a complex area and there are many areas of regulation, ranging from the requirement for environmental assessment, the need for environmental permits, licences and consents, marine conservation requirements, and measures relating to the avoidance of pollution, marine noise, chemicals and energy efficiency and emissions. Requirements will vary depending on the type of project. Additional regimes will also need to be complied with which are beyond the scope of this Practice Note, for example marine planning requirements will need to be followed and necessary building controls and design and safety standards will need to be complied with, as well as applicable health and safety legislation and decommissioning requirements. In addition, permission may be needed from the Crown Estate or the relevant landowner to access the seabed or foreshore and admiralty consent may be required under local legislation. For more information, see: • Marine planning—overview • Building regulations for construction lawyers—overview • Design in construction projects—overview • Health and safety in the