Welsh statutory instrument

A Welsh statutory instrument (WSI; Welsh: offerynnau statudol Cymru) is subordinate legislation made by the Welsh Ministers, as well as subordinate legislation made by public bodies using powers provided to be exercisable by Welsh statutory instrument. WSIs are the main form of subordinate legislation in Wales, being used by default to exercise powers delegated to the Welsh Ministers, the Counsel General, and the King-in-Council.

Source: Wikipedia — Welsh statutory instrument (CC BY-SA 4.0)