In relation to a blight notice served by virtue of section 158—
Where the appropriate authority have served a counter-notice objecting to a blight notice on the grounds mentioned in section 159(1), then if either—
the appropriate authority shall be deemed—
The date referred to in subsection (2)—
Where the appropriate authority have served a counter-notice objecting to a blight notice on the grounds mentioned in section 159(1) and also on the grounds mentioned in section 151(4)(c), then if either—
the appropriate authority shall be deemed to be authorised to acquire compulsorily under the appropriate enactment the interest of the claimant in so far as it subsists in the part of the affected area specified in the counter-notice (but not in so far as it subsists in any other part of that area or in the unaffected area) and to have served a notice to treat in respect of it on the date mentioned in subsection (5).
The date referred to in subsection (4)—
In relation to a blight notice served by virtue of section 158 references to "the appropriate authority" and "the appropriate enactment" shall be construed as if the unaffected area of an agricultural unit were part of the affected area.