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| N J Anderson Limited | 2021 | 30 Apr 2027 (in 200 days) |
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| Na Gas and Bathroom Ltd | 2017 | 31 Jan 2027 (in 111 days) |
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| NG Gas and Maintenance Ltd | 2025 | 3 Jun 2027 (in 234 days) |
| NGP Services Ltd | 2021 | 31 Oct 2026 (in 19 days) |
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| No.1 Contractors Ltd | 2025 | 30 Jun 2027 (in 261 days) |
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| Nottingham Plumbing & Heating Ltd | 2005 | 31 Mar 2027 (in 170 days) |
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| NPK Plumbing & Heating Limited | 2024 | |
| Ocean Maintenance-UK Limited | 2020 | 31 Jul 2027 (in 292 days) |
| Otto Homes Air Con Ltd | 2026 | 31 Mar 2028 (in 536 days) |
| Oxley's Installations Limited | 2024 | 31 Dec 2026 (in 80 days) |
| P&C Plumbing Solutions Ltd | 2025 | 27 Jul 2027 (in 288 days) |
| P. Harrison Plumbing & Heating Limited | 2016 | 31 Dec 2027 (in 445 days) |
| Paul Baverstock Plumbing & Heating Services Limited | 2019 | 31 Dec 2026 (in 80 days) |
| Peter Bates Building & Plumbing Limited | 2014 | 30 Apr 2027 (in 200 days) |
| PHD Plumbing Ltd | 2016 | 31 Oct 2026 (in 19 days) |
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| Plumb Safe Services Ltd | 2022 | 31 Mar 2027 (in 170 days) |
| Plumbe Installations Ltd | 2021 | 30 Nov 2027 (in 414 days) |
| Plumbing & Pipeline Supplies Limited | 2014 | 31 Jul 2027 (in 292 days) |
| Plumbing + Gas Services Limited | 2015 | 30 Dec 2027 (in 444 days) |
| Portman Air Conditioning Holdco Limited | 2025 | 31 May 2027 (in 231 days) |
| Precision Plumbing and Heating Engineers Ltd | 2015 | 30 Sep 2027 (in 353 days) |
| Premier Mechanical Holdings Ltd | 2024 | 9 Dec 2026 (in 58 days) |
| Primeflow Plumbing & Drainage Ltd | 2025 | 26 Jun 2027 (in 257 days) |
| Progas Heating & Plumbing Services Ltd | 2026 | 23 Oct 2027 (in 376 days) |
| Project Bathroom Ltd | 2023 | 31 Jul 2027 (in 292 days) |
| Pump N Pound Ltd | 2020 | 30 Jun 2027 (in 261 days) |
| Pump Serve Ltd | 2025 | 11 Sep 2027 (in 334 days) |
| Qubic Gas & Heating Ltd | 2025 | 4 Nov 2026 (in 23 days) |
| Ra Plumbing & Heating Limited | 2026 | 21 Oct 2027 (in 374 days) |