| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CRYSTALHILL LIMITED | 04721299 | 09/04/2003 | Insolvent |
| CSD INVESTMENTS LIMITED | 04961106 | 12/11/2003 | Dissolved |
| Coolaccord Ltd | 05224757 | 04/10/2004 | Dissolved |
| Coolaccord Ltd | 05224757 | 04/10/2004 | Dissolved |
| D'Arcy Interiors Ltd | 02458987 | 01/07/2001 | Dissolved |
| D'Arcy Interiors Ltd | 02458987 | 28/04/1993 | Dissolved |
| Diamondflek Ltd | 05730834 | 06/06/2006 | Dissolved |
| Diamondflek Ltd | 05730834 | 06/06/2006 | Dissolved |
| ENTERPRISE DEVELOPMENTS (WALES) LIMITED | 07906458 | 11/01/2012 | Dissolved |
| Hale Sylfaen Ltd. | 02934341 | 31/05/1994 | Dissolved |
| MUMBLES DEVELOPMENTS LIMITED | 09052903 | 22/05/2014 | Dissolved |
| MUMBLES RFC 2024 LIMITED | 15816290 | 03/07/2024 | Amber |
| MUMBLES RUGBY FOOTBALL CLUB LIMITED | 11341166 | 02/05/2018 | Amber |
| MUMBLES SPORTS & COMMUNITY CLUB LTD | 08223454 | 21/09/2012 | Dissolved |
| Morfa Plant Limited | 02123982 | 21/08/1992 | Dissolved |
| Morfa Plant Limited | 02123982 | 21/08/1992 | Dissolved |
| Morgan,J T,Construction Ltd | 02803590 | 08/04/1993 | Dissolved |
| Morgan,J T,Construction Ltd | 02803590 | 08/04/1993 | Dissolved |
| PROPERTY INVESTMENT SWANSEA LIMITED | 06479225 | 21/01/2008 | Silver |
| PROPERTY INVESTMENT SWANSEA LIMITED | 06479225 | 21/01/2008 | Silver |
| RJE INVESTMENTS LIMITED | 04961192 | 28/11/2006 | Dissolved |
| Road Construction Ltd | 01773969 | 30/09/1992 | Dissolved |
| Road Construction Ltd | 01773969 | 30/09/1992 | Dissolved |
| Rodzone Limited | 02324197 | 31/07/1991 | Dissolved |
| Rodzone Limited | 02324197 | 31/07/1991 | Dissolved |
| SYLFAEN LIMITED | 03383351 | 09/06/1997 | Dissolved |
| SYLFAEN LIMITED | 03383351 | 09/06/1997 | Dissolved |
| Sylfaen (Wales) Ltd | 03560375 | 08/05/1998 | Dissolved |
| Sylfaen (Wales) Ltd | 03560375 | 08/05/1998 | Dissolved |
| Sylfaen Construction Ltd | 02241011 | 31/12/1991 | Dissolved |
| Sylfaen Holdings Ltd | 02427434 | 28/09/1991 | Dissolved |
| Sylfaen Holdings Ltd | 02427434 | 28/09/1991 | Dissolved |
| Sylfaen Investments Limited | 02428452 | 03/10/1991 | Dissolved |
| Sylfaen Investments Limited | 02428452 | 03/10/1991 | Dissolved |
| UNDERHILL MANAGEMENT COMPANY LTD | 13452240 | 30/03/2023 | Amber |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AMY DILLWYN MANAGEMENT COMPANY LTD | 09543129 | 15/04/2015 | 24/06/2016 | Gold |
| AWG INVESTMENTS LIMITED | 04961227 | 12/11/2003 | 01/12/2006 | Amber |
| D'Arcy Interiors Ltd | 02458987 | 12/01/1992 | 25/11/1999 | Dissolved |
| FIRMLEVEL MANAGEMENT COMPANY LIMITED | 04884529 | 16/10/2003 | 12/01/2007 | Silver |
| GRAVAN CONSTRUCTION LIMITED | 03279435 | 01/08/1997 | 31/08/1999 | Dissolved |
| GRAVAN CONSTRUCTION LIMITED | 03279435 | 01/08/2000 | 02/12/2005 | Dissolved |
| LLYS FELIN NEWYDD MANAGEMENT COMPANY LIMITED | 02368666 | 04/04/1990 | 12/05/2003 | Bronze |
| LLYS FELIN NEWYDD MANAGEMENT COMPANY LIMITED | 02368666 | 28/01/1999 | 12/05/2003 | Bronze |
| Sylfaen Construction Ltd | 02241011 | 31/12/1991 | 23/09/1999 | Dissolved |