By subsection 18(1), the originating Act of 1931 was to come into operation on 1 January 1932, save as otherwise provided in the Act; and by subsection 18(2), it was to extend to Northern Ireland only if an Order in Council was made to that effect.
The originating Act of 1931 was scheduled to commence on 1 January 1932, subject to any exceptions stated in the Act; and its scope was limited to Northern Ireland unless a special Order in Council was issued for that purpose.