| Interpretation Act (Northern Ireland) 1954 | 1954 Chapter 33 | s. 24(1) | modified | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | s. 57(2)(a) | Yes | |
| Interpretation Act (Northern Ireland) 1954 | 1954 Chapter 33 | s. 39(2) | modified | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | s. 57(2)(b) | Yes | |
| Pneumoconiosis, etc., (Workers' Compensation) (Northern Ireland) Order 1979 | 1979 No. 925 | art. 2(2) | words added | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | s. 52(2) | Yes | |
| Pneumoconiosis, etc., (Workers' Compensation) (Northern Ireland) Order 1979 | 1979 No. 925 | art. 3(3)(b) | words substituted | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | s. 52(3) | Yes | |
| Pneumoconiosis, etc., (Workers' Compensation) (Northern Ireland) Order 1979 | 1979 No. 925 | art. 5(1)(c) | substituted | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | s. 53(1) | Yes | |
| Pneumoconiosis, etc., (Workers' Compensation) (Northern Ireland) Order 1979 | 1979 No. 925 | art. 5(2A) (2B) | inserted | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | s. 53(2) | Yes | |
| Pneumoconiosis, etc., (Workers' Compensation) (Northern Ireland) Order 1979 | 1979 No. 925 | art. 11(2) | words inserted | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | s. 52(4) | Yes | |
| Pneumoconiosis, etc., (Workers' Compensation) (Northern Ireland) Order 1979 | 1979 No. 925 | Sch. | inserted | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 6 | Yes | |
| The Education Reform(Northern Ireland) Order 1989 | 1989 No. 2406 | art. 131(3)(b) | words substituted | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 3 para. 1 | Yes | |
| The Child Support (Northern Ireland) Order 1991 | 1991 No. 2628 | art. 2 | words inserted | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 3 para. 2(2) | Yes | |
| The Child Support (Northern Ireland) Order 1991 | 1991 No. 2628 | art. 9(1) | words inserted | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 3 para. 2(3) | Not yet | |
| The Child Support (Northern Ireland) Order 1991 | 1991 No. 2628 | art. 9(1) | words inserted | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 3 para. 2(4) | Not yet | |
| The Child Support (Northern Ireland) Order 1991 | 1991 No. 2628 | art. 43(10) | words substituted | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 3 para. 2(5) | Not yet | |
| The Child Support (Northern Ireland) Order 1991 | 1991 No. 2628 | art. 43(11) | words inserted | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 3 para. 2(6) | Not yet | |
| The Child Support (Northern Ireland) Order 1991 | 1991 No. 2628 | art. 44(2)(b) | words inserted | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 3 para. 2(7) | Not yet | |
| The Child Support (Northern Ireland) Order 1991 | 1991 No. 2628 | Sch. 1 para. 5(4) | words inserted | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 3 para. 2(8) | Yes | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 21(2) Table heading | repealed | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 8 | Not yet | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 6A(3)(c) | word repealed | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 8 | Yes | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 6A(3)(e) and word | added | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 3 para. 3(2) | Yes | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 20(1)(b) | repealed | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 8 | Not yet | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 20(2) | words repealed | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 8 | Not yet | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 21(1) | words repealed | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 8 | Not yet | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 21(2) Table | words repealed | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 8 | Not yet | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 21(4) | words repealed | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 8 | Not yet | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 21(5A)(c) | words repealed | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 8 | Not yet | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 22(2)(a) | words inserted | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 3 para. 3(3)(a) | Yes | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 22(5) | words inserted | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 3 para. 3(3)(b) | Yes | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 22(8) | added | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 3 para. 3(4) | Yes | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 30A-30E | repealed | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 3 para. 3(5) Sch. 8 | Not yet | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 37(2) | words repealed | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | s. 46 Sch. 8 | Yes | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 39A(3) | words repealed | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | s. 47 Sch. 8 | Yes | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 40-42 | repealed | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 8 | Not yet | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 44(4) | words repealed | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 8 | Not yet | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 47 | repealed | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 8 | Not yet | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 61(1) | words repealed | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 8 | Not yet | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 61(2) | repealed | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 8 | Not yet | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 61A(3)(c) | word inserted | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 3 para. 3(6) | Yes | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 61A(3)(d) and word | repealed | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 8 | Not yet | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 67(2)-(6) | substituted for s. 67(2) | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | s. 54(1) | Yes | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 72(1A) | inserted | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | s. 48(2) | Yes | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 72(2A) | inserted | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | s. 48(3) | Yes | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 72(5) | words inserted | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | s. 48(4) | Yes | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 72(6) | repealed | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | s. 48(5) Sch. 8 | Yes | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 72(7) | words substituted | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | s. 48(6) | Yes | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 72(7A) | inserted | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | s. 48(7) | Yes | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 72(8)-(12) | substituted for s. 67(8) | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | s. 54(2) | Yes | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 73(4A) | substituted for s. 73(4) | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | s. 49(2) | Yes | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 73(5) | words repealed | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | s. 49(3) Sch. 8 | Yes | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 73(5A) | inserted | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | s. 49(4) | Yes | |
| Social Security Contributions and Benefits (Northern Ireland) Act 1992 | 1992 c. 7 | s. 73(9)(a) | words inserted | Welfare Reform Act (Northern Ireland) 2007 | 2007 c. 2 | Sch. 7 para. 1(2) | Yes | |