Except as provided by subsection (2) below, statutory undertakers shall not be entitled to compensation in respect of a decision mentioned in section 170(1)(a) or (b) of the principal Act (right to compensation in respect of certain decisions and orders) where that decision is made after the commencement of this section.
Subsection (1) above shall not apply to compensation in respect of a decision made in accordance with section 159 of the principal Act refusing planning permission for the development of operational land, or granting such permission subject to conditions, where—
(a) planning permission for that development would have been granted by a development order but for a direction given under such an order that planning permission so granted should not apply to the development; and
(b) it is not development which has received specific parliamentary approval (within the meaning given to that expression by section 69(3) of this Act).
Section 119 of the principal Act (compensation on refusal of planning permission or its grant subject to conditions) shall not apply in relation to planning permission for the development of operational land of statutory undertakers.