5. If, where a project which is subject to a decision made under paragraph 3 above has commenced, it appears to the Secretary of State to be necessary to safeguard the integrity of the European site, she may by notice require the person responsible for carrying out such works or any person interested in the relevant land to carry out such works of reinstatement as may be reasonable in the circumstances and any person who carries out works in compliance with such a requirement shall be entitled, on making a claim in accordance with paragraph 8 below, to recover from the Secretary of State compensation in respect of any expenses reasonably incurred by him in that behalf.U.K.