Where it appears to the appropriate agency that a licence under this Chapter should be revoked or varied, the appropriate agency may formulate proposals for revoking or varying the licence.
In the case of a licence to obstruct or impede any inland waters, a variation may take the form of a requirement that the impounding works be modified in ways specified in the proposed new provision of the licence.
Where—
the Secretary of State may, as he may consider appropriate in the circumstances, give the appropriate agency a direction under subsection (3) below.
A direction under this subsection may—
Notice in the prescribed form of any proposals formulated under this section with respect to any licence shall—
If—
a copy of the notice for the purposes of subsection (4) above shall, not later than the date on which it is first published as mentioned in subsection (4)(b) above, be served on any navigation authority, harbour authority or conservancy authority having functions in relation to those waters at a place where the licence, if varied in accordance with the proposals, would authorise water to be abstracted or impounded.
A notice for the purposes of subsection (4) above shall—
The period referred to in subsection (6)(b) above—
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