20A.—(1) Whenever remuneration in the Civil Service is increased with effect from a particular day in accordance with agreements or arrangements that have effect on a general basis in the Civil Service (whether or not they also apply in relation to persons employed other than in the Civil Service), the child allowances payable under section 20 are, by the operation of this section, increased on and from that day by the same proportion.

(2) In this section "Civil Service" has the meaning given by the Civil Service Commissioners Act, 1956.]