The Secretary of State may by order make such modifications of existing provisions as appear to him to be necessary or expedient in consequence of the provisions of this Act, or of any instrument made under or by virtue of this Act, being modifications in respect of—
or who is authorised to do so under or by virtue of any enactment;
In this section—
"existing provision" means a provision contained in any Act (whether public general or local) passed, or in subordinate legislation made, before the relevant date;
"railway" has its wider meaning, within the meaning of Part I above;
"railway service" has the same meaning as in Part I above;
"the relevant date", in relation to any modification, means the date of the coming into force of the provision of this Act on which the modification is consequential;
"subordinate legislation" has the same meaning as in the Interpretation Act 1978.