Devolution
Acts of the Scottish Parliament, Acts of the Northern Ireland Assembly and Measures of the Welsh Assembly may also confer the power to make delegated legislation.
Whilst Scottish or Northern Irish Acts, and Welsh Measures, draw their constitutional legitimacy and legal effect from the enabling Acts of the Westminster Parliament establishing the Parliament and Assembly, they are classified as primary, not delegated, legislation.
Read more about this topic: Delegated Legislation In The United Kingdom