The Secretary of State may by order provide, to the extent that appears to him to be expedient in consequence of any provision of this Act,—
An order providing for the transfer of an employee from the employment of one relevant authority to that of another shall include provision for the protection of his interests.
Any such order shall also include provision—
are not less favourable, taken together, than those which he enjoyed immediately before his transfer.
The transfer of an employee shall be treated as occurring—