| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 3(1) | words omitted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 2(2)(a) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 3(1) | words omitted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 2(2)(b) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 3(1) | words substituted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 2(2)(c) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 3(1) | word substituted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 2(2)(d) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 3(1) | words inserted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 2(2)(e) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 3(1) | words substituted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 2(2)(f) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 3(1) | words omitted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 2(2)(g) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 3(1) | word inserted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 2(2)(h) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 3(1) | words omitted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 2(2)(i) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 3(1) | word omitted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 2(2)(j) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 3(1) | word inserted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 2(2)(j) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 3(1) | word inserted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 2(2)(k) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 3(1) | words omitted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 2(2)(l) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 3(1) | words inserted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 2(2)(m) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 3(1) | words substituted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 2(2)(n) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 3(1) | word inserted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 2(2)(o) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 3(1) | words omitted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 2(2)(p) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 3(1) | words omitted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 2(2)(q) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 3(1) | word omitted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 2(2)(r) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 7(1) | word omitted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 3(2) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 7(3)(c) | sum substituted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 3(3) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 7(3)(d)(e) | substituted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 3(4) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 7(3)(f) | word substituted for full stop | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 3(5) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 7(3)(g) | inserted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 3(6) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 7(4) | inserted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 3(7) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 8(3)(b) | substituted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 4(2) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 9(3)(c)(iii) | word inserted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 5(2)(a) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 9(3)(c)(iii) | semicolon substituted for full stop | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 5(2)(b) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 9(3)(d)(e) | inserted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 5(3) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 10(1) | full stop inserted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 6(2)(b) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 10(1)(d) | substituted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 6(2)(a) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 10(3)(a)(b) | words substituted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 6(3)(a) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 10(3)(a) | word inserted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 6(3)(b) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 10(3)(b)(i)(ii) | word inserted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 6(3)(b) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 10(3)(d)(e) | words substituted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 6(3)(a) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 10(3)(d) | word inserted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 6(3)(c) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 10(3)(e)(ii) | word inserted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 6(3)(d) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 10(6)(b)-(h) | substituted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 6(4) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 10A | inserted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 7(2) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 10B | inserted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 8(2) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 12(1A) | inserted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 9(2) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 12(2) | substituted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 9(3) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 12(3A) | inserted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 9(4) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 12(4) | substituted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 9(5) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 12(6)(b) | word omitted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 9(6)(a) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 12(6)(c)(i) | words omitted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 9(6)(b) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 12(6)(c)(ii) | substituted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 9(6)(c) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 12(6)(d) | substituted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 9(6)(d) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 12(6)(e)(7)(8) | inserted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 9(7) | Yes | |
| The Gas (Standards of Performance) Regulations 2005 | 2005 No. 1135 | reg. 13(2) | words omitted | The Gas (Standards of Performance) (Amendment) Regulations 2008 | 2008 No. 696 | reg. 10(2) | Yes | |