| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CSD INVESTMENTS LIMITED | 04961106 | 12/11/2003 | Dissolved |
| D'Arcy Interiors Ltd | 02458987 | 04/08/2000 | Dissolved |
| Diamondflek Ltd | 05730834 | 06/06/2006 | Dissolved |
| Morfa Plant Limited | 02123982 | 21/08/1992 | Dissolved |
| Morgan,J T,Construction Ltd | 02803590 | 08/04/1993 | Dissolved |
| Sylfaen (Wales) Ltd | 03560375 | 08/05/1998 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| FIRMLEVEL MANAGEMENT COMPANY LIMITED | 04884529 | 16/10/2003 | 12/01/2007 | Silver |
| GRAVAN CONSTRUCTION LIMITED | 03279435 | 31/08/1999 | 02/12/2005 | Dissolved |
| GRAVAN CONSTRUCTION LIMITED | 03279435 | 17/07/1997 | 02/12/2005 | Dissolved |
| Hale Sylfaen Ltd. | 02934341 | 31/05/1994 | 30/01/1998 | Dissolved |
| Road Construction Ltd | 01773969 | 30/09/1992 | 30/01/1998 | Dissolved |
| Rodzone Limited | 02324197 | 31/07/1991 | 30/01/1998 | Dissolved |
| Sylfaen Construction Ltd | 02241011 | 31/12/1991 | 30/01/1998 | Dissolved |
| Sylfaen Holdings Ltd | 02427434 | 28/09/1991 | 30/01/1998 | Dissolved |
| Sylfaen Investments Limited | 02428452 | 03/10/1991 | 30/01/1998 | Dissolved |