In this Memorandum—

• “determining authority” means—

  1. a

     in relation to Great Britain, the Secretary of State, the First-Tier Tribunal established under section 3(1) (the First-tier Tribunal and the Upper Tribunal) of the Tribunals, Courts and Enforcement Act 20075 or the Upper Tribunal established under section 3(2) of that Act, and

  2. b

     in relation to Northern Ireland, the Northern Ireland department having responsibility for social security, an appeal tribunal constituted under Chapter 1 (general) of Part 2 (decisions and appeals) of the Social Security (Northern Ireland) Order 19986 or a Commissioner appointed under section 50 (appointment of Commissioners) of the Social Security Administration (Northern Ireland) Act 19927,

  as the case may require;

• “the relevant legislation” means—

  1. a

     in relation to Great Britain, the following legislation and any subordinate legislation made or having effect as if made under that legislation—

     1. i

        the Social Security Administration Act 1992;

     2. ii

        Chapter 2 (social security decisions and appeals) of Part 1 (decisions and appeals) of the Social Security Act 1998;

     3. iii

        the Welfare Reform Act 2012;

  2. b

     in relation to Northern Ireland, the following legislation and any subordinate legislation made or having effect as if made under that legislation—

     1. i

        the Social Security Administration (Northern Ireland) Act 19928;

     2. ii

        Chapter 2 (social security decisions and appeals) of Part 2 (decisions and appeals) of the Social Security (Northern Ireland) Order 1998;

     3. iii

        the Welfare Reform (Northern Ireland) Order 2015,

  in each case as amended, modified, adapted, extended, supplemented, replaced or consolidated by any subsequent enactment or by any subordinate legislation, but not legislation made for the purpose of giving effect to the provisions of any agreement applying to one of the two territories and providing for reciprocity with a scheme of social security in force outside the United Kingdom;

• “territory” means Great Britain or Northern Ireland, as the case may require.

In the application of this Memorandum to a territory, expressions used in this Memorandum shall have the same meaning as in the relevant legislation which relates to that territory.

The rules for the construction of Acts of Parliament and instruments contained in the Interpretation Act 19789 shall apply for the purposes of the interpretation of this Agreement as they apply for the purposes of the interpretation of an Act of Parliament or instrument.