6An affiliation order (that is to say an order under section 4 of the [1957 c. 55.] Affiliation Proceedings Act 1957, section 44 of the [1948 c. 29.] National Assistance Act 1948, section 26 of the [1948 c. 43.] Children Act 1948 or section 24 of the [1966 c. 20.] Ministry of Social Security Act 1966).