| A & J Plumbing (Yorkshire) Limited | 2014 | 30 Jun 2027 (in 261 days) |
| A Robinson Plumbing Limited | 2020 | 31 Jul 2027 (in 292 days) |
| A T Plumbing & Heating (Lincs) Limited | 2019 | 30 Nov 2026 (in 49 days) |
| Abey Air Conditioning Limited | 2008 | 31 Dec 2027 (in 445 days) |
| Adwick Projects Ltd | 2014 | 30 Nov 2026 (in 49 days) |
| Ask Paul's Plumbing Services Limited | 2011 | 31 Dec 2026 (in 80 days) |
| Boiler HQ Ltd | 2022 | 30 Jun 2027 (in 261 days) |
| C. Woodward Plumbing, Heating & Property Services Limited | 2019 | 31 Dec 2027 (in 445 days) |
| D R Plumbing & Heating (North) Limited | 2009 | 28 Feb 2027 (in 139 days) |
| Drant's Plumbing & Heating Limited | 2014 | 31 Oct 2027 (in 384 days) |
| DWW Plumbing and Heating Ltd | 2021 | 30 Sep 2027 (in 353 days) |
| Essential Heat Solutions Ltd | 2017 | 31 Dec 2026 (in 80 days) |
| Expert Drain Solutions Ltd | 2026 | 30 Oct 2027 (in 383 days) |
| Gas by Taz Ltd | 2026 | 6 Nov 2027 (in 390 days) |
| Haydock Heating Limited | 2025 | 15 Jun 2027 (in 246 days) |
| Hsos Industrial Services Limited | 2015 | 30 Sep 2027 (in 353 days) |
| Humber Heating Services Limited | 2014 | 30 Jun 2027 (in 261 days) |
| I.Crabb Solutions Ltd | 2025 | 6 Nov 2026 (in 25 days) |
| Iain Anderson Heating Limited | 2009 | 31 Jul 2027 (in 292 days) |
| Igs North Limited | 2013 | 31 Aug 2027 (in 323 days) |
| J C Plumbing & Heating (Scunthorpe) Limited | 2021 | 31 Aug 2027 (in 323 days) |
| J Ogg Plumbing and Heating Ltd | 2026 | 26 May 2028 (in 592 days) |
| James Broadbent Plumbing and Heating Limited | 2017 | 30 Nov 2026 (in 49 days) |
| Jason Thorpe Plumbing & Heating Services Ltd | 2015 | 31 Mar 2027 (in 170 days) |
| Jensens Heating & Plumbing Ltd | 2021 | 31 Mar 2028 (in 536 days) |
| JH Simpson Plumbing & Heating Limited | 2019 | 31 Oct 2026 (in 19 days) |
| JHW Developments Limited | 2004 | 30 Jun 2027 (in 261 days) |
| Kershaw Plumbing Services (Messingham) Ltd | 2023 | 29 Feb 2028 (in 505 days) |
| LDB Plumbing & Heating & Son Ltd | 2024 | 30 Jun 2027 (in 261 days) |
| Lewis Gas and Plumbing Services Limited | 2020 | 31 Dec 2027 (in 445 days) |
| Lewis Goodhand Ltd | 2025 | 5 Mar 2027 (in 144 days) |
| Martin Russell Plumbing and Heating Ltd | 2014 | 31 Jul 2027 (in 292 days) |
| Matt Thompson Plumbing Contractors Limited | 2020 | 30 Nov 2026 (in 49 days) |
| Michael J Burgin Limited | 2005 | 31 Dec 2026 (in 80 days) |
| MR Therm Boilers for Life Ltd | 2018 | 30 Oct 2027 (in 383 days) |
| MR. Therm (Servicecare) Limited | 1997 | 30 Sep 2027 (in 353 days) |
| NB Plumbing, Heating and Property Maintenance Limited | 2026 | 19 Dec 2027 (in 433 days) |
| Nigel Werrett Limited | 2011 | 31 Dec 2026 (in 80 days) |
| P.D.H. Plumbing & Heating Limited | 2002 | 31 Aug 2027 (in 323 days) |
| Pentatherm Ltd | 2025 | 1 Sep 2027 (in 324 days) |
| PJ'S Plumbing & Heating Limited | 2021 | 31 Dec 2027 (in 445 days) |
| Plumb Deal Ltd | 2010 | 31 Dec 2026 (in 80 days) |
| Plumb-Up Ltd | 2007 | 31 Dec 2026 (in 80 days) |
| PR Gas Ltd | 2026 | 22 Apr 2028 (in 558 days) |
| Premier Plumbing and Jetting Limited | 2024 | 30 Jun 2027 (in 261 days) |
| Pure Warmth Stoves Ltd | 2026 | 7 Apr 2028 (in 543 days) |
| R.A. Goodrum Plumbing & Heating Limited | 1999 | 31 Dec 2026 (in 80 days) |
| R.Coulson Plumbing & Heating Ltd | 2024 | 31 Jul 2027 (in 292 days) |
| RNR Renewables Ltd | 2024 | 31 Jan 2027 (in 111 days) |
| Roxby Heating Engineers Ltd | 2019 | 30 Nov 2026 (in 49 days) |