| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1 | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 2 | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 3 | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 4 | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 5 | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 6 | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 7 | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 8 | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 9 | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 10 | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 11 | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 12 | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 13 | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | Sch. 1 Pt. I | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | Sch. 1 Pt. II | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | Sch. 1 Pt. III | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | Sch. 2 para. 1 | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | Sch. 2 para. 2 | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | Sch. 2 para. 3 | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | Sch. 2 para. 4 | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | Sch. 2 Pt. I | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | Sch. 2 Pt. III | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | Sch. 3 Pt. I | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | Sch. 3 Pt. II | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | Sch. 4 | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | Sch. 5 Pt. I | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | Sch. 5 Pt. II | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | Sch. 6 | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | Sch. 7 para. 1 | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | Sch. 7 para. 2 | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | Sch. 7 para. 3 | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | Sch. 7 para. 4 | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | Sch. 7 Pt. I | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | Sch. 8 Pt. I | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |
| The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | Sch. 8 Pt. II | coming into force | The Air Quality (Ozone) Regulations (Northern Ireland) 2003 | 2003 No. 240 | reg. 1(1) | Yes | |