A father of a child only obtains parental responsibility for that child if one of the criteria in the Children Act 1989 (ChA 1989) is satisfied (ChA 1989, s 2). Where a child’s father and mother were not married to, or civil partners of, each other at the time of the child’s birth the father shall have parental responsibility for the child if he has acquired it (and has not ceased to have it) in accordance with the provisions of ChA 1989. ChA 1989, s 4(1)(a) provides that where a child’s father and mother were not married to, or civil partners of, each other at the time of the child’s birth the father shall acquire parental responsibility for the child if, except where ChA 1989, s 4(1C) applies, he becomes registered as the child’s father under any of the enactments specified in ChA 1989,