| MB Reactive Maintenance Limited | 2026 | 27 Oct 2027 (in 380 days) |
| Mda Plumbing Limited | 2018 | 31 Dec 2027 (in 445 days) |
| Melbourne Plumbing & Bathrooms Limited | 2014 | 30 Apr 2027 (in 200 days) |
| Mercury Plumbing & Heating Limited | 2008 | 30 Sep 2027 (in 353 days) |
| MGS Plumbing & Gas Ltd | 2019 | 31 May 2027 (in 231 days) |
| Midland Plumbing & Gas Ltd | 2026 | 4 Dec 2027 (in 418 days) |
| Midland Plumbing and Heating Services Limited | 2016 | 31 Dec 2026 (in 80 days) |
| Mja Heating Services Limited | 2011 | 31 Jan 2027 (in 111 days) |
| MJS Plumbing & Heating (Cheshunt) Limited | 2024 | 31 Jan 2027 (in 111 days) |
| Morley Plumbing Services Limited | 2015 | 31 Dec 2026 (in 80 days) |
| MS O’Brien Holdings Limited | 2022 | 31 Dec 2026 (in 80 days) |
| Murfins Plumbing and Heating Ltd | 2016 | 31 Oct 2026 (in 19 days) |
| Neil Haywood Plumbing & Heating Limited | 2015 | 5 Jan 2027 (in 85 days) |
| NRS Gas Ltd | 2023 | 31 Oct 2026 (in 19 days) |
| O'Neill Pipework Solutions Ltd | 2014 | 31 Dec 2027 (in 445 days) |
| Oakwood Stoves & Fireplace Installations Limited | 2008 | 31 Oct 2026 (in 19 days) |
| Osprey Mechanical Services Ltd | 2014 | 30 Nov 2026 (in 49 days) |
| P & H Plumbing and Heating Limited | 2023 | 31 Dec 2026 (in 80 days) |
| P. O. Plumbing Services Limited | 2003 | 31 Dec 2026 (in 80 days) |
| P.M. Mechanical Limited | 2001 | 30 Sep 2027 (in 353 days) |
| Paul Finley (Plumbing & Heating) Limited | 2003 | 31 Jan 2027 (in 111 days) |
| Peak Plumbing Limited | 2009 | 29 Jan 2027 (in 109 days) |
| PHD Derbyshire Ltd | 2016 | 31 Oct 2026 (in 19 days) |
| Phoenix Heating & Plumbing Services Ltd | 2019 | 30 Apr 2027 (in 200 days) |
| Phoenix Plumbing & Heating Limited | 2026 | 1 Mar 2028 (in 506 days) |
| Plumbing Solutions Experts Ltd | 2025 | 19 Feb 2027 (in 130 days) |
| Plumbwerx Ltd | 2024 | 31 May 2027 (in 231 days) |
| PPM Derby Limited | 2026 | 22 Feb 2028 (in 498 days) |
| Pra & Gra Ltd | 2026 | 8 Feb 2028 (in 484 days) |
| Prestige Onsite Plumbing Services Limited | 2025 | 31 Jan 2028 (in 476 days) |
| Prestige Plumbing & Gas Ltd | 2025 | 30 Nov 2027 (in 414 days) |
| Pride Plumbing Services Limited | 2005 | 30 Apr 2027 (in 200 days) |
| Pride Plumbing, Heating and Building Limited | 2015 | 31 May 2027 (in 231 days) |
| Profile Design & Construction Limited | 2003 | 31 Jul 2027 (in 292 days) |
| Profix Crew Limited | 2026 | 14 Jan 2028 (in 459 days) |
| Pureflow Services Limited | 2017 | 31 Jul 2027 (in 292 days) |
| Quarndon Plumbing Ltd | 2026 | 29 Apr 2028 (in 565 days) |
| R & D Plumbing,Heating & Gas Services Limited | 2022 | 31 Jan 2027 (in 111 days) |
| R&M (Midlands) Ltd | 2021 | 31 Oct 2027 (in 384 days) |
| Rapid Seal Limited | 2025 | 31 Dec 2027 (in 445 days) |
| RB Plumbing & Tiling Ltd | 2026 | 22 Dec 2027 (in 436 days) |
| Renewable Heat (UK) Ltd | 2010 | 31 May 2027 (in 231 days) |
| RJB Plumbing & Heating Solutions Ltd. | 2016 | 31 Jan 2027 (in 111 days) |
| RJM Heating Plumbing & Gas Services Limited | 2008 | 31 Dec 2026 (in 80 days) |
| RML Plumbing and Heating Limited | 2020 | 31 Aug 2027 (in 323 days) |
| RMS Gas Limited | 2025 | 16 Apr 2027 (in 186 days) |
| Ross Birks Plumbing and Heating Limited | 2020 | 31 May 2027 (in 231 days) |
| Rowney Construction Limited | 2022 | 31 Dec 2026 (in 80 days) |
| RST Solutions Ltd | 2024 | 31 Jan 2027 (in 111 days) |
| S O'Brien Heating Solutions Limited | 2012 | 31 Dec 2026 (in 80 days) |