30.—(1) In relation to an agreement mentioned in section 17(1), the period prescribed for the purposes of section 17(7) is three months starting on the day on which any council which is a party to the agreement withdraws from it.
(2) A corresponding plan strategy or corresponding local policies plan for the purposes of section 17(5) is a plan strategy or local policies plan which—
(a)does not relate to any part of the district of the council that has withdrawn from the agreement, and
(b)with respect to the districts of the councils which prepared it, and has not withdrawn from the agreement, has substantially the same effect as the original joint plan.
(3) In paragraph (2)(b), “original joint plan” means a joint plan strategy or a joint local policies plan prepared pursuant to the agreement mentioned in paragraph (1).