10.—(1) A relevant work shall not be constructed, altered, replaced, relaid or reconstructed except in accordance with plans and sections approved by the Secretary of State and subject to any conditions and restrictions imposed by the Secretary of State before the work is begun.
(2) If a relevant work is constructed, altered, replaced, relaid or reconstructed in contravention of this article or of any condition or restriction imposed under this article—
(a)the Secretary of State may by notice in writing require the Company at its own expense to remove the relevant work or any part thereof and restore the site thereof to its former condition; and, if on the expiration of 30 days from the date when the notice is served upon the Company it has failed to comply with the requirements of the notice, the Secretary of State may execute the works specified in the notice; or
(b)if it appears to the Secretary of State urgently necessary so to do, he may remove the relevant work or part of it and restore the site to its former condition;
and any expenditure incurred by the Secretary of State in so doing shall be recoverable from the Company.