| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| A.B.C. VALVES LIMITED | 02235024 | 01/07/1992 | Dissolved |
| ABACUS VALVES (MANUFACTURING) LIMITED | 02654516 | 16/10/1991 | Dissolved |
| ABACUS VALVES INTERNATIONAL LIMITED | 03997079 | 18/05/2000 | Bronze |
| Abacus Engineering Ltd | 03678019 | 03/12/1998 | Dissolved |
| Abacus Valves Systems Ltd | 03863999 | 22/10/1999 | Dissolved |
| HOGG LIMITED | 07015264 | 10/09/2009 | Dissolved |
| HOGG PARTNERSHIP MANAGEMENT LIMITED | SC823875 | 25/09/2024 | Amber |
| SPICER U.K. LIMITED | 03462998 | 10/11/1997 | Amber |
| SPICER U.K. LIMITED | 03462998 | 10/09/2010 | Amber |
| Spicer Alexander Ltd | 03560169 | 01/04/2000 | Dissolved |
| Spicer McCall Ltd | 02810147 | 19/04/1993 | Dissolved |
| WEF BRAMDEAN COMPANY LIMITED | 14213219 | 04/07/2022 | Not Trading |
| Wash Systems Ltd | 02370269 | 30/09/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ALTON BUSINESS CENTRE MANAGEMENT ASSOCIATION LIMITED | 02489438 | 17/10/1997 | 28/02/2001 | Not Trading |
| ANDERSON STEWART (CASTINGS) LIMITED | 00577106 | 30/06/1999 | 01/01/2010 | Not Trading |
| Abacus Valves (Holdings) Limited | 02582689 | 14/02/1991 | 04/06/1993 | Dissolved |
| Abacus Valves (Sales) Limited | 02736482 | 31/07/1992 | 09/02/1993 | Dissolved |
| CHARWELL HOUSE LIMITED | 04126766 | 02/01/2001 | 18/12/2010 | Dissolved |
| GARNOCK LIMITED | 03758895 | 26/04/1999 | 27/04/2005 | Dissolved |
| GLEN FOUNDRY LIMITED | 03754526 | 19/04/1999 | 29/06/2007 | Gold |
| PARATROOPER LIMITED | SC461255 | 18/03/2014 | 17/09/2019 | Silver |