Abatement of works abandoned or decayed
9. Where Work No. 1 or any part of it, is abandoned or allowed to fall into decay the Secretary of State may by notice in writing require the undertaker at its own expense either to repair and restore Work No. 1 or any part, or to remove it and, without prejudice to any notice served under section 105(2) of the 2004 Act, restore the site to its former condition, to such an extent and within such limits as the Secretary of State thinks proper.