The Minister shall enforce and execute the provisions of the sections, orders and regulations specified in paragraph 1 of Schedule 6, and the food and drugs authorities shall enforce and execute the provisions of the sections and regulations specified in paragraph 2 of that Schedule.
It is the duty of every local authority to enforce and execute in their district the provisions of any section of this Act with respect to which the duty is not expressly, or by necessary implication, imposed on some other authority.
Subsection (3) applies to Northern Ireland so far as it relates—
to those regulations and orders made under Part I which apply to Northern Ireland; and
to the enforcement and execution of those regulations and orders,
by the substitution in paragraph (a) of the words "district councils" for "county councils, local authorities, food and drugs authorities, port health authorities"; and
by the construction of the reference to any authority concerned in the administration of this Act as a reference to any authority concerned in the administration of any corresponding Northern Ireland enactment.
and accordingly that subsection is modified—