(3)His Majesty may by Order in Council direct that in their application to any person so transferred the said Acts, orders, rules and regulations shall have effect subject to any such modifications as may appear to His Majesty to be necessary for securing that the case of any such person shall not be dealt with in any manner less favourable to him than it would have been dealt with if this Act had not been passed and he had continued to serve on the establishment of the Secretary of State in Council.