This section applies if the Welsh Ministers —
They shall—
In making the determinations under subsection (2) above they shall take into account—
They shall notify the authority in writing of—
A designation under this section—
If an authority has been designated under this section as regards a financial year the Welsh Ministers may not designate it under section 52D(2)(a) above as regards that year.
If—
the calculations (or substitute calculations) shall be invalid unless they are made in accordance with section 52T or 52U below (as the case may be).
Before the end of the period notified under subsection (4)(f) above an authority may inform the Welsh Ministers by notice in writing that—
The period notified under subsection (4)(f) above must be a period of at least 21 days beginning with the day the authority receives the notification under subsection (4) above.