s 39 Grants in respect of measures to secure due functioning of undertakings.
(1) There may be paid out of moneys provided by Parliament towards approved expenses of public utility undertakers in taking measures . . . to secure the due functioning of their undertaking in the event of hostile attack, grants not exceeding one-half of those expenses. (2) In this section the expression “ approved expenses ” means such expenses of a capital nature, incurred on such measures, as the appropriate department, acting in accordance with general directions of the Treasury, may approve for the purposes of this section. (3) This section shall not apply in relation to any railway undertaking . . . . . ..