21Nothing in Part I of this Schedule shall be construed as validating any transaction whereby a local authority purported, in the exercise of a power conferred by an enactment repealed by this Act, but without the consent of a Minister then required by that enactment.—
(a)to acquire land by agreement in pursuance of a contract made before the sixteenth day of August, nineteen hundred and fifty-nine, or
(b)to appropriate or dispose of land before that day,
notwithstanding that the transaction could have been validly effected without that consent under the corresponding provisions of Part V of this Act.