| M Schofield Plumbing and Heating Ltd | 2026 | 30 Oct 2027 (in 383 days) |
| M.B. Heating Solutions Ltd | 2012 | 31 Dec 2027 (in 445 days) |
| M60 Plumbing&Heating Ltd | 2020 | 31 Oct 2027 (in 384 days) |
| Margas Heating and Plumbing Limited | 2015 | 31 Oct 2027 (in 384 days) |
| Maverick Air Conditioning Ltd | 2026 | 11 Nov 2027 (in 395 days) |
| MB Gas Ltd | 2008 | 31 Dec 2026 (in 80 days) |
| MKW Plumbing and Heating Limited | 2025 | 31 Dec 2026 (in 80 days) |
| MM Building Services (Sheffield) Ltd | 2007 | 29 Dec 2026 (in 78 days) |
| Mor-Gas Services Ltd | 2017 | 31 Jul 2027 (in 292 days) |
| Nicheheatingsolutions Ltd | 2025 | 4 Aug 2027 (in 296 days) |
| Nick Taylor (the Perfect Fit) Ltd | 2020 | 30 Apr 2027 (in 200 days) |
| O'Neills Gas Limited | 2022 | 31 Dec 2026 (in 80 days) |
| O2 Ventilation Systems Ltd | 2018 | 31 Jul 2027 (in 292 days) |
| Ob Plumbing and Heating (South Yorkshire) Ltd | 2025 | 12 Sep 2027 (in 335 days) |
| Ollax Ltd | 2025 | 31 Jan 2028 (in 476 days) |
| P. C. Kelly Plumbing & Heating (Rotherham) Limited | 1990 | 31 Mar 2027 (in 170 days) |
| PCK Plumbing & Heating Ltd | 2015 | 31 Mar 2027 (in 170 days) |
| Peak Renewables Ltd | 2024 | 31 Mar 2028 (in 536 days) |
| Pipe DR Ltd | 2023 | 30 May 2027 (in 230 days) |
| Plumb Fusion Limited | 2021 | 30 Jun 2027 (in 261 days) |
| Plumbernow Ltd | 2023 | |
| Protec Plumbing and Heating Ltd | 2024 | 28 Feb 2027 (in 139 days) |
| R M Heating & Gas Ltd | 2024 | 31 Dec 2026 (in 80 days) |
| R Walton Plumbing & Heating Ltd | 2025 | 10 Jul 2027 (in 271 days) |
| R.W Plumbing Services Ltd | 2025 | 23 Mar 2027 (in 162 days) |
| Rad Eco Systems Limited | 2009 | 30 Jun 2027 (in 261 days) |
| RCS Plumbing & Heating Ltd | 2008 | 30 Jun 2027 (in 261 days) |
| Renewable Heating Installers Ltd | 2019 | 31 Jul 2027 (in 292 days) |
| Renovate Gas Ltd | 2021 | 31 Jan 2027 (in 111 days) |
| Rich Home Renovation Ltd | 2021 | 31 Dec 2026 (in 80 days) |
| Richardsons Bathroom Interiors Ltd | 2018 | 31 Jul 2027 (in 292 days) |
| Rotherplumb Ltd | 2025 | 19 Sep 2027 (in 342 days) |
| Rsy (Air Conditioning) Limited | 1984 | 31 Jan 2027 (in 111 days) |
| S&S Engineering Services Limited | 2020 | 31 Oct 2027 (in 384 days) |
| S. Dudill Plumbing & Heating Limited | 2008 | 31 Dec 2027 (in 445 days) |
| Same Day Emergency Plumber Ltd | 2025 | 29 Feb 2028 (in 505 days) |
| Scholes Plumbing & Heating Services Ltd | 2003 | 30 Dec 2026 (in 79 days) |
| Scott Stevens Plumbing & Heating Limited | 2022 | 30 Sep 2027 (in 353 days) |
| Scotts Plumbing & Heating (Yorkshire) Ltd | 2023 | 31 Dec 2026 (in 80 days) |
| Sevico Solution Limited | 2025 | 8 Jul 2027 (in 269 days) |
| SJ Plumbing Limited | 2016 | 31 Oct 2026 (in 19 days) |
| Smart Flow Ltd | 2019 | 31 Oct 2026 (in 19 days) |
| South Yorkshire Plumbing & Building Services Limited | 2011 | 30 Apr 2027 (in 200 days) |
| SRH Plumbing & Heating Ltd | 2018 | 30 Apr 2027 (in 200 days) |
| Stables Heating (Contractors) Limited | 1997 | |
| Start to Finish Incorporated Limited | 2007 | 31 Dec 2026 (in 80 days) |
| Steve's Stoves & Home Improvements Ltd | 2021 | 30 Jun 2027 (in 261 days) |
| T M Plumbing and Heating Services Limited | 2022 | 30 Apr 2027 (in 200 days) |
| T S Plumbing & Heating (Yorkshire) Limited | 2022 | 31 Aug 2027 (in 323 days) |
| The Kool Air Company Ltd | 2025 | 27 Jan 2027 (in 107 days) |