If—
(a) a complaint is made to the Secretary of State that any library authority has failed to carry out duties relating to the public library service imposed on it by or under this Act; or
(b) the Secretary of State is of opinion that an investigation should be made as to whether any such failure by a library authority has occurred,
and, after causing a local enquiry to be held into the matter, the Secretary of State is satisfied that there has been such a failure by the library authority, he may make an order declaring it to be in default and directing it for the purpose of removing the default to carry out such of its duties, in such manner and within such time, as may be specified in the order.
If a library authority with respect to which an order has been made under the preceding subsection fails to comply with any requirement of the order, the Secretary of State, instead of enforcing the order by mandamus or otherwise,—
(a) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(b) if the authority is a joint board, may make an order providing that on a date specified therein the board shall be dissolved and—
(i) that on its dissolution the authorities constituting the board,. . . . . . , shall again become library authorities;
(ii) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(iii) that the functions relating to the public library service of such of those library authorities as may be specified in that behalf in the order shall be transferred to the Secretary of State, or
(c) in any other case, may make an order providing that the functions of the authority relating to the public library service shall be transferred to the Secretary of State.
A power conferred by subsection (2) above to make an order shall be exercisable by statutory instrument, which shall be subject to annulment in pursuance of a resolution of either House of Parliament.
Where functions of a library authority have been transferred to the Secretary of State under subsection (2) above he may at any time by order transfer those functions back to the authority, and the order may contain such supplemental provisions as may appear to him to be expedient for that purpose.
Section 324 of the Public Health Act 1936 (which relates to expenses incurred in exercising the functions of a body in default under that Act) shall apply in relation to expenses incurred by the Secretary of State in exercising the functions of a library authority as if the Secretary of State were the Minister therein referred to and the reference to a local authority included any library authority.