4. In this Act—
“the Department” means the Department for Social Development;
“First-tier Tribunal” and “Upper Tribunal” mean those tribunals established under section 3 of the Tribunals, Courts and Enforcement Act 2007 (c. 15);
“statutory provision” has the meaning given by section 1(f) of the Interpretation Act (Northern Ireland) 1954 (c. 33);
“Tribunal Procedure Rules” has the same meaning as in the Tribunals, Courts and Enforcement Act 2007.