| Gas Services Information Regulations 2012 | 1 Oct 2023 | Current | 01-n0-01 |  Official Version |  Word |  HTML | |  PDF | Word | |
| Gas Services Information Regulations 2012 | 21 Apr 2023 | 30 Sep 2023 | 01-m0-00 | Official Version | Word | HTML | | PDF | Word | |
| Gas Services Information Regulations 2012 | 1 Jul 2021 | 20 Apr 2023 | 01-l0-00 | Official Version | Word | HTML | | PDF | Word | |
| Gas Services Information Regulations 2012 | 16 Jan 2021 | 30 Jun 2021 | 01-k0-01 | Official Version | Word | HTML | | PDF | Word | |
| Gas Services Information Regulations 2012 | 28 Jul 2018 | 15 Jan 2021 | 01-j0-01 | Official Version | Word | HTML | | PDF | Word | |
| Gas Services Information Regulations 2012 | 1 Jul 2017 | 27 Jul 2018 | 01-i0-00 | Official Version | Word | HTML | | PDF | Word | |
| Gas Services Information Regulations 2012 | 3 Apr 2017 | 30 Jun 2017 | 01-h0-01 | Official Version | Word | HTML | | PDF | Word | |
| Gas Services Information Regulations 2012 | 24 Nov 2016 | 2 Apr 2017 | 01-g0-00 | Official Version | Word | HTML | | PDF | Word | |
| Gas Services Information Regulations 2012 | 1 Jul 2016 | 23 Nov 2016 | 01-f0-01 | Official Version | Word | HTML | | PDF | Word | |
| Gas Services Information Regulations 2012 | 30 Nov 2015 | 30 Jun 2016 | 01-e0-02 | Official Version | Word | HTML | | PDF | Word | |
| Gas Services Information Regulations 2012 | 14 Nov 2015 | 29 Nov 2015 | 01-d0-01 | Official Version | Word | HTML | | PDF | Word | |
| Gas Services Information Regulations 2012 | 3 Oct 2015 | 13 Nov 2015 | 01-c0-01 | Official Version | Word | HTML | | PDF | Word | |
| Gas Services Information Regulations 2012 | 9 Sep 2015 | 2 Oct 2015 | 01-b0-00 | Official Version | Word | HTML | | PDF | Word | |
| Gas Services Information Regulations 2012 | 16 Aug 2013 | 8 Sep 2015 | 01-a0-03 | Official Version | Word | HTML | | PDF | Word | |
| Gas Services Information Regulations 2012 | 29 Jun 2013 | 15 Aug 2013 | 00-c0-01 | Official Version | Word | HTML | | PDF | Word | |
| Gas Services Information Regulations 2012 | 15 Jun 2013 | 28 Jun 2013 | 00-b0-00 | Official Version | Word | HTML | | PDF | Word | |
| Gas Services Information Regulations 2012 | 30 Jun 2012 | 14 Jun 2013 | 00-a0-01 | Official Version | Word | HTML | | Unavailable | Unavailable |  Unavailable |
