15.—(1) If the application of these Rules would put a particular individual in a position less advantageous than that in which he would have been if the Rules did not apply in relation to him, they shall not be so applied.
(2) These Rules shall not apply in relation to any person if the only public offices in which he has been employments in a capacity remunerated out of moneys provided by the Parliament of Northern Ireland or the Consolidated Fund of Northern Ireland.
(3) These Rules shall not apply in relation to any person who, in any of the public offices in which he has been employed, has served in any of the capacities listed, or treated by virtue of any enactment as listed, in Schedule 1 to the Administration of Justice (Pensions) Act 1950, unless the Superannuation Act 1965 applies to him in respect of his service in that capacity.
(4) A person to whom Part III of the Commonwealth Telegraphs (Cable and Wireless Ltd. Pensions) Regulations 1955(1) applies and who has not become a civil servant shall, for the purposes of these Rules, be deemed not to be employed in a public office during any such period of employment in the civil service of the State in an unestablished capacity as is mentioned in Regulation 8 of those Regulations.
(1955 I. p. 500).