so much of the land delineated on the deposited plans and described in the deposited book of reference as they may require for the purposes of the authorised works or for any purpose connected with, or ancillary to, their undertaking including (without prejudice to the generality of the foregoing) the provision of parking facilities for road vehicles and means of access thereto; and

so much of any land specified in columns (2) and (3) of Schedule 4 to this Act shown on the deposited plans within the limits delineated by the line marked “limit of land to be acquired or used” as they may require for the purpose specified in relation to that land in column (1) of that Schedule.