The rules vary for Scotland and Northern Ireland, but elsewhere Building Regulations approval can usually be obtained by application to a building control body (BCB), of which there are two types: local Authority BCBs (usually a council's building control department) and private BCBs (known as Approved Inspectors). If an Approved Inspector is used, before any controlled building work can start on site they must inform the local authority about the work.
Building Regulations requirements vary in Scotland and Northern Ireland, but generally, approval can be obtained through a building control application process, which involves two types of authorities: municipal council departments responsible for building control and private entities designated as Accredited Inspectors. When using an Accredited Inspector, they must inform the local authority before commencing any regulated construction work.