| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| AMICIS DEVELOPMENTS LIMITED | 13495901 | 06/07/2021 | Bronze |
| AMICIS MAINTENANCE LIMITED | 14234608 | 14/07/2022 | Not Trading |
| CENTRELESS CONVEYORS LIMITED | 06349667 | 21/08/2007 | Dissolved |
| ET2-REVOLUTION LIMITED | 05348805 | 01/02/2006 | Dissolved |
| NATSAR LIMITED | 15792600 | 21/06/2024 | Amber |
| SPIROTECH GLOBAL HOLDINGS LTD | 05363884 | 14/02/2005 | Silver |
| SPIROTECH GROUP LTD | 11748307 | 03/01/2019 | Silver |
| SPIROTECH SCOTLAND LIMITED | SC440085 | 11/01/2013 | Dissolved |
| SPIROTECH SERVICE & MAINTENANCE LIMITED | 14368455 | 21/09/2022 | Not Trading |
| SPIROTECH SRD GROUP LIMITED | 05021065 | 14/02/2005 | Silver |
| SPIROTECH YORK LIMITED | 09831916 | 20/10/2015 | Silver |
| SRD FABRICATIONS LLP | OC355969 | 25/06/2010 | Dissolved |
| SRD PLUMBING AND HEATING LIMITED | 07688227 | 30/06/2011 | Dissolved |
| Steefane Kemtech Ltd | 04268334 | 31/08/2004 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ENVIRONMENTAL TECHNOLOGY (UK) LTD | 05363886 | 14/02/2005 | 01/07/2009 | Bronze |
| SPIRAL SERVICES LIMITED | 11002964 | 09/10/2017 | 07/10/2019 | Bronze |