45.—(1) Where before the date on which a site becomes a European site or, if later, the commencement of these Regulations, a competent authority has decided to undertake, or to give any consent, permission or other authorisation, for a plan or project to which regulation 43(1) would apply if it were to be reconsidered as of that date, the authority shall, as soon as reasonably practicable, review its decision or, as the case may be, the consent, permission or other authorisation, and shall affirm, modify or revoke it.
(2) The authority shall for that purpose make an appropriate assessment for the site in view of that site’s conservation objectives; and the provisions of regulation 43(2) to (4) shall apply, with the appropriate modifications, in relation to such a review.
(3) Subject to the following provisions of this Part, any review required by this regulation shall be carried out under existing statutory procedures where such procedures exist, and if none exist the Department may give directions as to the procedures to be followed.
(4) Nothing in this regulation shall affect anything done in pursuance of the decision, or the consent, permission or other authorisation, before the date mentioned in paragraph (1).