21. Schedule 4 applies if, after the date of—
(a)a decision that a project is not a significant project, or
(b)a decision to grant consent for a project,
a site becomes a European site and Natural England considers that the carrying out or completion (within the meaning of “completed” in regulation 18(6)) of the project would be likely to have a significant effect on that site and would not be directly connected with or necessary for the management of the site.