| Fair Trading Act 1973 | 1973 c. 41 | s. 125(1) | excluded | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | Sch. 4 para. 18(1) | Yes | |
| Northern Ireland Assembly Disqualification Act 1975 | 1975 c. 25 | Sch. 1 Pt. 2 | entry inserted | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | Sch. 1 para. 12 | Yes | |
| Northern Ireland Assembly Disqualification Act 1975 | 1975 c. 25 | Sch. 1 Pt. 3 | entry repealed | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | Sch. 5 | Yes | |
| Competition Act 1998 | 1998 c. 41 | s. 55 | applied | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | Sch. 4 para. 18(2) | Yes | |
| Competition Act 1998 | 1998 c. 41 | s. 56 | applied | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | Sch. 4 para. 18(2) | Yes | |
| Competition Act 1998 | 1998 c. 41 | Sch. 7 para. 12A | excluded | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | art. 6(10) | Yes | |
| Competition Act 1998 | 1998 c. 41 | Sch. 10 para. 7(3) | repealed | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | Sch. 5 | Yes | |
| Competition Act 1998 | 1998 c. 41 | Sch. 10 para. 8(3) | repealed | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | Sch. 5 | Yes | |
| Competition Act 1998 | 1998 c. 41 | Sch. 10 para. 17(5) | repealed | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | Sch. 5 | Yes | |
| Competition Act 1998 | 1998 c. 41 | Sch. 10 para. 17(7) (8) | repealed | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | Sch. 5 | Yes | |
| Competition Act 1998 | 1998 c. 41 | Sch. 10 para. 18(5) (6) | repealed | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | Sch. 5 | Yes | |
| Competition Act 1998 | 1998 c. 41 | Sch. 10 para. 18(7) | repealed | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | Sch. 5 | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | Pt. 9 | applied | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | art. 63(10) | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | s. 109 | applied (with modifications) by S.I. 1992/231 (N.I. 1), art. 17A(14)(17)(18) (as inserted) | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | art. 36(2) | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | s. 109 | applied (with modifications) by S.I. 1996/275 (N.I. 2), art. 17A(17)(20)(21) (as inserted) | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | art. 37 | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | s. 109 | applied (with modifications) | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | Sch. 2 para. 5(1) para. 5(5) (6) | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | s. 110 | applied (with modifications) by S.I. 1992/231 (N.I. 1), art. 17A(14)(15)(17)(18) (as inserted) | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | art. 36(2) | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | s. 110 | applied (with modifications) by S.I. 1996/275 (N.I. 2), art. 17A(17)(18)(20)(21) (as inserted) | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | art. 37 | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | s. 110 | applied (with modifications) | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | Sch. 2 para. 5(1) para. 5(2) para. 5(5) (6) | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | s. 111 | applied (with modifications) by S.I. 1992/231 (N.I. 1), art. 17A(14)(16)(17)(18) (as inserted) | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | art. 36(2) | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | s. 111 | applied (with modifications) by S.I. 1996/275 (N.I. 2), art. 17A(17)(19)(20) (21) (as inserted) | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | art. 37 | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | s. 111 | applied (with modifications) | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | Sch. 2 para. 5(1) para. 5(3) para. 5(5) (6) | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | s. 112 | applied (with modifications) by S.I. 1992/231 (N.I. 1), art. 17A(14)(17)(18) (as inserted) | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | art. 36(2) | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | s. 112 | applied (with modifications) by S.I. 1996/275 (N.I. 2), art. 17A(17)(20)(21) (as inserted) | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | art. 37 | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | s. 112 | applied (with modifications) | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | Sch. 2 para. 5(1) para. 5(5) (6) | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | s. 113 | applied (with modifications) by S.I. 1992/231 (N.I. 1), art. 17A(14)(17)(18) (as inserted) | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | art. 36(2) | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | s. 113 | applied (with modifications) by S.I. 1996/275 (N.I. 2), art. 17A(17)(20)(21) (as inserted) | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | art. 37 | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | s. 113 | applied (with modifications) | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | Sch. 2 para. 5(1) para. 5(5) (6) | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | s. 114 | applied (with modifications) by S.I. 1992/231 (N.I. 1), art. 17A(14)(17)(18) (as inserted) | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | art. 36(2) | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | s. 114 | applied (with modifications) by S.I. 1996/275 (N.I. 2), art. 17A(17)(20)(21) (as inserted) | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | art. 37 | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | s. 114 | applied (with modifications) | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | Sch. 2 para. 5(1) para. 5(5) (6) | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | s. 115 | applied (with modifications) by S.I. 1992/231 (N.I. 1), art. 17A(14)(17)(18) (as inserted) | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | art. 36(2) | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | s. 115 | applied (with modifications) by S.I. 1996/275 (N.I. 2), art. 17A(17)(20)(21) (as inserted) | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | art. 37 | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | s. 115 | applied (with modifications) | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | Sch. 2 para. 5(1) para. 5(5) (6) | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | s. 116 | applied (with modifications) by S.I. 1992/231 (N.I. 1), art. 17A(14)(17)(18) (as inserted) | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | art. 36(2) | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | s. 116 | applied (with modifications) by S.I. 1996/275 (N.I. 2), art. 17A(17)(20)(21) (as inserted) | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | art. 37 | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | s. 116 | applied (with modifications) | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | Sch. 2 para. 5(1) para. 5(5) (6) | Yes | |
| Enterprise Act 2002 | 2002 c. 40 | s. 117 | applied (with modifications) | The Energy (Northern Ireland) Order 2003 | 2003 No. 419 | Sch. 2 para. 5(4)-(6) | Yes | |