1Local authorities for the purposes of Part I
(1)The local authorities for the purposes of this Part of this Act in England and Wales shall be the Common Council of the City of London and the councils of metropolitan boroughs, county boroughs and county districts:
Provided that—
(a)the local authority for any port health district, whether constituted before or after the commencement of this Act, shall be the port health authority; and
(b)in relation to sewers vested in the council of any county, the functions of the local authority under this Part of this Act shall be exercisable by that council and not by any other authority.
(2)The local authorities for the purposes of this Part of this Act in Scotland shall be the local authorities within the meaning of the Public Health. (Scotland) Act, 1945, and port local authorities within the meaning of section one hundred and seventy-two of the Public Health (Scotland) Act, 1807.
(3)Section six of the Public Health Act, 1936 (which provides for the constitution of united districts for any of the purposes of that Act) shall have effect as if the purposes of this Part of this Act were purposes of that Act.