| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Apc Coatings Ltd | 02250790 | 29/04/1998 | Dissolved |
| CLYTHA PROPERTIES LIMITED | 10375057 | 23/11/2016 | Dissolved |
| SENIOR ALUMINIUM SYSTEMS (DESIGN) LIMITED | 03135798 | 12/12/1995 | Dissolved |
| SENIOR ALUMINIUM SYSTEMS (MIDLANDS) LIMITED | 03986737 | 08/05/2000 | Dissolved |
| SENIOR ALUMINIUM SYSTEMS (SCOTLAND) LIMITED | 02805212 | 30/03/1993 | Dissolved |
| SENIOR ALUMINIUM SYSTEMS (SE) LTD. | 03267117 | 11/11/1996 | Dissolved |
| SENIOR ALUMINIUM SYSTEMS (SOUTH) LIMITED | 02963647 | 31/08/1994 | Dissolved |
| SENIOR COATINGS LIMITED | 03398632 | 03/07/1997 | Strike Off |
| SENIOR SUPPLIES LIMITED | 03135092 | 07/12/1995 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Apc Coatings Ltd | 02250790 | 06/01/1998 | 12/11/1998 | Dissolved |
| CLYTHA HOLDINGS LIMITED | 02543555 | 09/12/1991 | 12/11/1998 | Amber |
| CLYTHA HOLDINGS LIMITED | 02543555 | 01/01/1991 | 19/10/2018 | Amber |
| CLYTHA INVESTMENT COMPANY LTD | 13461683 | 17/06/2021 | 13/06/2024 | Strike Off |
| COUNCIL FOR ALUMINIUM IN BUILDING | 05687264 | 25/01/2006 | 23/06/2016 | Gold |
| ENDCLIFFE HOLDINGS LIMITED | 11591645 | 27/09/2018 | 13/06/2024 | Gold |
| SENIOR ALUMINIUM SYSTEMS (DESIGN) LIMITED | 03135798 | 12/12/1995 | 24/10/2005 | Dissolved |
| SENIOR ALUMINIUM SYSTEMS (SCOTLAND) LIMITED | 02805212 | 28/04/1993 | 12/11/1998 | Dissolved |
| SENIOR ALUMINIUM SYSTEMS (SE) LTD. | 03267117 | 11/11/1996 | 12/11/1998 | Dissolved |
| SENIOR ALUMINIUM SYSTEMS (SOUTH) LIMITED | 02963647 | 31/08/1994 | 12/11/1998 | Dissolved |
| SENIOR ARCHITECTURAL SYSTEMS LIMITED | 03909137 | 24/06/2000 | 19/10/2018 | Gold |
| SENIOR COATINGS LIMITED | 03398632 | 03/07/1997 | 24/10/2005 | Strike Off |
| SENIOR GLASS SYSTEMS LIMITED | 03135801 | 12/12/1995 | 12/11/1998 | Bronze |
| SENIOR GLASS SYSTEMS LIMITED | 03135801 | 12/12/1995 | 26/11/2019 | Bronze |
| SENIOR SUPPLIES LIMITED | 03135092 | 07/12/1995 | 12/11/1998 | Dissolved |