Where the direction affects any building, structure, or apparatus held or used by a statutory undertaker for the purposes of his undertaking, or affects any of the rights of a statutory undertaker to install or maintain apparatus for those purposes, or effects any right of way enjoyed by a statutory undertaker for those purposes, the undertaker shall bre entitled to recover compensation from the appropriate person in accordance with the special provisions of Part II of this Act relating to statutory undertakers in any case in which those provisions apply, and shall not, in any such case, be entitled to recover compensation under the preceding paragraphs of this Schedule.