| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 1 | words substituted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 1 | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 2(1) | words inserted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 2(2)(a) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 2(1) | word substituted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 2(2)(b) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 2(2) | words substituted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 2(3)(a) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 2(2) | words omitted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 2(3)(b) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 2(3) | words substituted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 2(4) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 2(3) | words substituted in earlier amending provision S.I. 2019/531, Sch. 4 para. 2(4) | The Electricity and Gas etc. (Amendment) (EU Exit) Regulations 2020 | 2020 No. 1016 | reg. 4(4)(a) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 2(6) | words omitted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 2(5) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 3 | words omitted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 3(2) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 3(13) | words substituted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 3(3) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 3(15) | words substituted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 3(4) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 3(16) | words substituted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 3(5) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 3(26)(27) | inserted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 3(6) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 4 | words substituted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 4(2) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 4 | words inserted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 4(3) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 5(1) | words inserted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 5 | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 6(1)(a)(1) | words substituted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 6(2) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 6(1)(a)(3) | words omitted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 6(3) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 6(1)(a)(5) | word omitted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 6(4)(a) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 6(1)(a)(5) | words inserted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 6(4)(b) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 6(1)(a)(7) | inserted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 6(5) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 6(1)(a) | words inserted | The Energy Act 2023 (Consequential Amendments) Regulations 2024 | 2024 No. 706 | reg. 43(a) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 6(1)(b) | words inserted | The Energy Act 2023 (Consequential Amendments) Regulations 2024 | 2024 No. 706 | reg. 43(b) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 6(1A) | inserted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 6(6) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 6(2) | words omitted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 6(7) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 6(2) | amendment to earlier affecting provision S.I. 2019/531, Sch. 4 para. 6(7) | The Electricity and Gas etc. (Amendment) (EU Exit) Regulations 2020 | 2020 No. 1016 | reg. 4(4)(b) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 6(4) | omitted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 6(8) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 7(1) | word omitted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 7(2)(a) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 7(1) | word substituted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 7(2)(b) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 7(1) | words inserted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 7(2)(c) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 7(2) | word omitted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 7(3)(a) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 7(2) | word substituted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 7(3)(b) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 7(2) | words inserted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 7(3)(c) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 7(2) | words substituted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 7(3)(d) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 8(2) | substituted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 8(2) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 8(3) | words inserted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 8(3) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 11(9) | words substituted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 9 | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 12(7) | words substituted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 10 | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 13(7) | words substituted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 11 | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 14(5) | words substituted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 12(2) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 14(6) | words substituted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 12(3) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 15(2) | words substituted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 13(2)(a) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 15(2) | words substituted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 13(2)(b) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 15(3) | words substituted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 13(3) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 19 | words substituted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 14(2) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 19 | words substituted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 14(3) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 19 | words omitted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 14(5) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 19(10) | inserted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 14(4) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 20(1)-(3) | omitted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 15(2) | Yes | |
| Commission Regulation (EU) 2017/459 | 2017 No. 459 | Art. 20(4) | words inserted | The Gas (Security of Supply and Network Codes) (Amendment) (EU Exit) Regulations 2019 | 2019 No. 531 | Sch. 4 para. 15(3) | Yes | |