A statutory body is an organization with the authority to check that another organization's actions are legal. It is typically set up by a government or parliament.
According to the Cambridge Dictionary, statutory bodies ensure that other businesses or organizations stay legal and follow official rules. They are a group created by law, and they are established by government legislation. Some examples include the General Medical Council, which regulates doctors in the United Kingdom, and the Committee on Climate Change, which advises governments on limiting carbon usage. Practicing medical doctors in the United Kingdom must be registered with the General Medical Council.