(1)Where under or by virtue of any provision of this Act—
(a)an order may be made, or
(b)directions may be given,
that provision includes power to vary or revoke the order or directions by subsequent order or by subsequent directions.
(2)Subsection (1) does not affect section 14(b) of the Interpretation Act 1978 (c. 30).
(3)A direction under this Act by the Welsh Ministers must be given—
(a)(subject to paragraphs (b) and (c)), by an instrument in writing,
(b)in the case of a direction under—
(i)section 12(1)(a),
(ii)section 24 about a function under section 4, 145 or 146, or
(iii)section 147(2),
by regulations,
(c)in the case of—
(i)any other direction under section 12,
(ii)any other direction under section 24, or
(iii)a direction under section 13, 19, 23, 45, 52(4), 60 or 66(4),
by regulations or an instrument in writing.
(4)Subsection (3) does not apply to a direction under section 46 (as to which, see that section).