In this Act—
"domestic law" means the law of England and Wales, Scotland or Northern Ireland;
"Minister of the Crown" has the same meaning as in the Ministers of the Crown Act 1975 and also includes the Commissioners for Her Majesty's Revenue and Customs;
"modify" includes amend, repeal or revoke (and related expressions are to be read accordingly);
"primary legislation" means—
(a)an Act of Parliament;
(b)an Act of the Scottish Parliament;
(c)an Act or Measure of Senedd Cymru;
(d)Northern Ireland legislation.