| Gavin Raitt Gas & Heating Services Ltd | 2015 | 31 Oct 2027 (in 383 days) |
| Glovers Plumbers Ltd | 2026 | 5 Feb 2028 (in 480 days) |
| Goldthrope Plumbing & Heating Ltd | 2008 | 31 Dec 2027 (in 444 days) |
| Granville G Hull & Son Limited | 2004 | 31 May 2027 (in 230 days) |
| Greenfinch Plumbing and Heating Ltd | 2026 | 14 Jan 2028 (in 458 days) |
| Greenline Plumbing, Heating & Bathroom Design Limited | 2005 | 30 Sep 2027 (in 352 days) |
| Gregory Climate Services Ltd | 2024 | 31 Dec 2027 (in 444 days) |
| H2O Event Services Ltd. | 2024 | 30 Nov 2027 (in 413 days) |
| Hall & Featherstone Limited | 2004 | 30 Sep 2027 (in 352 days) |
| Hall Plumbing Limited | 2022 | 28 Feb 2027 (in 138 days) |
| Hartleys Plumbing & Heating Engineers Ltd | 2022 | 30 Jun 2027 (in 260 days) |
| Heat-On Plumbing & Heating Solutions Ltd | 2026 | 24 Dec 2027 (in 437 days) |
| HP Plumbing and Heating Limited | 2015 | 30 Sep 2027 (in 352 days) |
| Humble Plumbing and Heating Ltd | 2018 | 30 Sep 2027 (in 352 days) |
| J Plumbing Ltd | 2014 | 28 Feb 2027 (in 138 days) |
| J Robinson Plumbing and Heating Ltd | 2022 | 28 Feb 2027 (in 138 days) |
| J S Goudie Plumbing Ltd | 2024 | 31 May 2027 (in 230 days) |
| James Langdale Ltd | 2017 | 31 Aug 2027 (in 322 days) |
| JLM Plumbing Services Limited | 2021 | 31 May 2027 (in 230 days) |
| Joe Dallin Gas Fitting Ltd | 2020 | 31 Dec 2026 (in 79 days) |
| Johnson's Heating & Plumbing Limited | 2008 | 31 Jan 2027 (in 110 days) |
| Kenson Gas Ltd | 2019 | 30 Sep 2027 (in 352 days) |
| Knowles (York) Limited | 2011 | 31 Dec 2026 (in 79 days) |
| Koolrite Refrigeration & Air Conditioning Limited | 2007 | 31 Jul 2027 (in 291 days) |
| L Wright Plumbing and Heating Limited | 2021 | 28 Feb 2027 (in 138 days) |
| Leger Interiors Ltd | 2003 | 31 May 2027 (in 230 days) |
| Lewis Jones Plumbing and Heating Ltd | 2026 | 16 Dec 2027 (in 429 days) |
| Locke Heating Solutions Ltd | 2021 | 31 Dec 2026 (in 79 days) |
| Louey Climate & Maintenance Services Ltd | 2026 | 20 Feb 2028 (in 495 days) |
| Lowther Plumbing & Heating Ltd | 2025 | 7 Jan 2027 (in 86 days) |
| M Collins Plumbing and Heating Ltd | 2023 | 31 Dec 2027 (in 444 days) |
| Mark Robinson Plumbing and Heating Ltd | 2016 | 31 Dec 2026 (in 79 days) |
| Minster Plumbing & Heating Limited | 1978 | 31 Mar 2027 (in 169 days) |
| MT Plumbing & Heating Services York Ltd | 2014 | 31 Dec 2026 (in 79 days) |
| My-Bathrooms Yorkshire.Co.UK Limited | 2012 | 31 Jan 2027 (in 110 days) |
| No.5 Plumbing and Building Services Limited | 2023 | 30 Sep 2027 (in 352 days) |
| Norcliffe Plumbing and Heating Ltd | 2026 | 13 Jan 2028 (in 457 days) |
| Nordli Plumbing & Heating Ltd | 2009 | 31 Dec 2026 (in 79 days) |
| Nunthorpe Services Ltd | 2018 | 31 Aug 2027 (in 322 days) |
| Owl Plumbing & Heating Ltd | 2020 | 31 Jul 2027 (in 291 days) |
| Pacific Heights Plumbing and Heating Services Limited | 2014 | 31 Aug 2027 (in 322 days) |
| Pad Gas Engineers Limited | 2002 | 30 Dec 2026 (in 78 days) |
| PGL Plumbing and Heating Ltd | 2024 | 31 Aug 2027 (in 322 days) |
| PJFM Plumbing Ltd | 2026 | 17 Nov 2027 (in 400 days) |
| Plumbcore Ltd | 2017 | 31 Dec 2026 (in 79 days) |
| Propane Tank Services Limited | 2003 | 31 Dec 2026 (in 79 days) |
| Purdy's Plumbing & Heating Ltd | 2018 | 30 Apr 2027 (in 199 days) |
| R & D Harrison Limited | 2007 | 31 Dec 2026 (in 79 days) |
| RPH York Ltd | 2015 | 31 Dec 2026 (in 79 days) |
| RVT Plumbing and Heating Limited | 2018 | 31 Dec 2026 (in 79 days) |