| A D Bleasdale & Son Ltd | 2007 | 30 Nov 2027 (in 414 days) |
| Alex Palmer Plumbing & Heating Limited | 2013 | 31 Dec 2026 (in 80 days) |
| Arnside Boiler Care Limited | 2023 | 31 Dec 2026 (in 80 days) |
| Baldwin Plumbing Services Limited | 2018 | 31 Jan 2027 (in 111 days) |
| Boak Mechanical Services Ltd | 2017 | 31 Dec 2026 (in 80 days) |
| Brad Atkinson Plumbing and Heating Limited | 2021 | 30 Apr 2027 (in 200 days) |
| Bwplumbing Ltd | 2022 | 31 Jul 2027 (in 292 days) |
| Chris Robinson (Plumb-Fast) Limited | 2019 | 31 Jan 2028 (in 476 days) |
| Cooling & Heating Services Ltd | 2014 | 30 Apr 2027 (in 200 days) |
| CRW Plumbing and Gas Services Ltd | 2012 | 31 Dec 2027 (in 445 days) |
| D R Shepherd Plumbing & Heating Ltd | 2021 | 30 Nov 2027 (in 414 days) |
| David Armstrong Plumbing and Heating Limited | 2005 | 30 Sep 2027 (in 353 days) |
| David J Dickinson & Sons Limited | 2023 | 30 Jun 2027 (in 261 days) |
| Drainaway Services Limited | 2025 | 21 Aug 2027 (in 313 days) |
| Emergency JG Plumbing & Heating Ltd | 2023 | 31 Oct 2027 (in 384 days) |
| Evolution Plumbing, Heating & Gas Ltd | 2022 | 31 Dec 2027 (in 445 days) |
| Fairclough & Woodruff Limited | 2009 | 30 Sep 2027 (in 353 days) |
| Gasline Plumbing & Heating Limited | 2010 | 28 Feb 2027 (in 139 days) |
| H Pearson Plumbing Services Ltd | 2020 | 31 Oct 2027 (in 384 days) |
| High Efficiency Installations Ltd. | 2007 | 30 Apr 2027 (in 200 days) |
| Hope and Hayes Ltd | 2024 | 30 Sep 2027 (in 353 days) |
| Ignite Heating Services (NW) Limited | 2019 | 28 Feb 2027 (in 139 days) |
| J J McQueen Limited | 2002 | 31 Jul 2027 (in 292 days) |
| J P Rigby Limited | 2024 | 31 May 2027 (in 231 days) |
| J.A. Mount Limited | 2003 | 30 Jun 2027 (in 261 days) |
| Jordan Contracting Limited | 2021 | 30 Apr 2028 (in 566 days) |
| Lamb's Plumbing and Heating Ltd | 2023 | 30 Nov 2026 (in 49 days) |
| Lancaster Bathrooms Limited | 2020 | 27 Oct 2026 (in 15 days) |
| Liam Roskell Heating Services Ltd | 2021 | 31 Dec 2026 (in 80 days) |
| M G Griggs Plumbing and Heating Limited | 2009 | 31 Mar 2027 (in 170 days) |
| M Lodge Heating & Plumbing Services Limited | 2006 | 30 Jun 2027 (in 261 days) |
| Mark Cottam Limited | 2002 | 30 Sep 2027 (in 353 days) |
| Pricewise Air Conditioning Limited | 2001 | 31 Aug 2027 (in 323 days) |
| R & M Wheildon Limited | 2004 | 28 Feb 2027 (in 139 days) |
| R. E. Salt & Co Limited | 2010 | 30 Apr 2027 (in 200 days) |
| R.K. Gas Services Limited | 2006 | 31 Mar 2027 (in 170 days) |
| Ripple Plumbing & Heating Ltd | 2021 | 30 Sep 2027 (in 353 days) |
| Roberts & Nicholls Plumbing Services Ltd | 2015 | 30 Sep 2027 (in 353 days) |
| Routledge Plumbing Ltd | 2012 | 31 Oct 2026 (in 19 days) |
| Sitec Support Services Limited | 2002 | 31 Mar 2028 (in 536 days) |
| Stride Services Limited | 2021 | 29 Feb 2028 (in 505 days) |
| T & K Pye Family Ltd | 2013 | 30 Nov 2026 (in 49 days) |
| T Chapman Limited | 2002 | 31 Dec 2027 (in 445 days) |
| T Entwisle Plumbing and Heating Ltd | 2017 | 31 May 2027 (in 231 days) |
| T Jackson (Plumbing & Heating Services) Limited | 2008 | 31 Mar 2028 (in 536 days) |
| Tim Wheildon Heating Services Limited | 2009 | 31 Dec 2026 (in 80 days) |
| W E Barton (Plumbing & Heating) Limited | 2011 | 31 Jan 2028 (in 476 days) |
| Whitaker and Co North West Limited | 2025 | 31 Dec 2027 (in 445 days) |
| Yorkshire Energy Gas Ltd | 2019 | 31 Dec 2026 (in 80 days) |