21.—(1) The undertaker may acquire compulsorily so much of the Order land as is required to carry out or to facilitate, or is incidental to, the authorised development, or is required as replacement land.
(2) This article is subject to paragraph (2) of article 24 (compulsory acquisition of rights) and paragraph (8) of article 31 (temporary use of land for carrying out the authorised development).
(3) The undertaker must not exercise the powers conferred by paragraph (1) in relation to any land unless it has first given notice in writing to the relevant planning authority and the local highway authority of which of the alternative A2070 options it intends to construct, being either the A2070 Option A or the A2070 Option B.