A works notice—
must specify the periods within which the person on whom it is served is required to do each of the things specified in the notice; and
is without prejudice to the powers of the appropriate agency to carry out any works or operations under section 161(5)(a) or 161ZA(6)(a).
Before serving a works notice on any person, the appropriate agency shall reasonably endeavour to consult that person concerning the works or operations which are to be specified in the notice.
The appropriate national authority may by regulations make provision for or in connection with—
the form or content of works notices;
requirements for consultation, before the service of a works notice, with persons other than the person on whom that notice is to be served;
steps to be taken for the purposes of any consultation required under subsection (2) or regulations made by virtue of paragraph (b); or
any other steps of a procedural nature which are to be taken in connection with or in consequence of the service of a works notice.
A works notice shall not be regarded as invalid or as invalidly served by reason only of a failure to comply with the requirements of subsection (2) or of regulations made by virtue of paragraph (b) of subsection (3).
In this section and section 161A, "appropriate national authority" means—
in relation to England, the Secretary of State; and
in relation to Wales, the Welsh Ministers.
The power to make regulations under this section shall be exercisable by statutory instrument subject—
in the case of regulations made by the Secretary of State, to annulment in pursuance of a resolution of either House of Parliament; and
in the case of regulations made by the Welsh Ministers, to annulment in pursuance of a resolution of the National Assembly for Wales.
In this section,—
paragraph (1) of section 219 does not apply; and
in paragraph (2) of that section, references to "the Ministers" or the "the Secretary of State" shall be taken to be references to the appropriate national authority.