3.—(1) Except as provided in paragraph (2), each local authority shall, within its area, enforce and execute the provisions of these Regulations and the specified Community provisions.
(2) The Secretary of State may direct, in relation to cases of a particular description or any particular case, that an enforcement duty imposed on a local authority by this regulation shall be discharged—
(a)by the Secretary of State and not by the local authority; or
(b)by the Secretary of State and by the local authority acting jointly.