The relevant section of the 1964 act reads in full:"Where, in relation to any purpose specified in section 23(1) of this Act, any right is conferred or any obligation is imposed, whether by operation of law or under any deed coming into operation after the commencement of the Children Act 1975, by reference to the relative seniority of the members of a class of persons, then, without prejudice to any entitlement under Part I of the Law Reform (Miscellaneous Provisions) (Scotland) Act 1968 of an illegitimate child who is adopted by one of his parents,(a) any member of that class who is an adopted person shall rank as if he had been born on the date...