| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Aspects (Bedford) Ltd | 04150271 | 30/01/2001 | Dissolved |
| Aspects (Bristol) Ltd | 03536687 | 08/04/1998 | Dissolved |
| Britannia Roofing Services Ltd | 02082078 | 01/04/1997 | Dissolved |
| CITY & COUNTY DEVELOPMENTS LIMITED | 01129225 | 01/04/1997 | Dissolved |
| CITY & COUNTY DEVELOPMENTS LIMITED | 01129225 | 02/04/2002 | Dissolved |
| CONSTRUCTION TRAINING (BEDFORD) LIMITED | 04896650 | 11/09/2003 | Dissolved |
| S D C (HOLDINGS) LIMITED | 01756144 | 02/01/1991 | Silver |
| SDC (ANGLIA) LIMITED | 01257932 | 01/04/1997 | Bronze |
| SDC (ANGLIA) LIMITED | 01257932 | 28/03/1994 | Bronze |
| SDC (PROPERTIES) LIMITED | 01843506 | 01/04/1997 | Bronze |
| SEDAC ELECTRICAL LIMITED | 06911907 | 20/05/2009 | Dissolved |
| THE SDC EBT LIMITED | 05135595 | 30/09/2004 | Not Trading |
| THE SDC EBT LIMITED | 05135595 | 20/08/2004 | Not Trading |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ANGLIA PROPERTY MANAGEMENT LIMITED | 06081166 | 07/03/2007 | 29/10/2009 | Amber |
| CITY & COUNTY PROJECTS LIMITED | 06494646 | 05/02/2008 | 01/10/2015 | Silver |
| CITY & COUNTY PROJECTS LIMITED | 06494646 | 05/02/2008 | 01/10/2015 | Silver |
| CITYLAKE DEVELOPMENTS LIMITED | 04361031 | 17/04/2002 | 01/10/2015 | One Red Flag |
| CITYLAKE DEVELOPMENTS LIMITED | 04361031 | 17/04/2002 | 01/10/2015 | One Red Flag |
| DIAMOND COURT MANAGEMENT (MK) LIMITED | 05865805 | 01/09/2006 | 19/02/2016 | Gold |
| S D C (HOLDINGS) LIMITED | 01756144 | 01/04/1997 | 14/05/2015 | Silver |
| S.D.C. BUILDERS LIMITED | 01251716 | 01/04/1997 | 14/05/2015 | Silver |
| S.D.C. BUILDERS LIMITED | 01251716 | 05/09/2005 | 01/01/2024 | Silver |
| YORK CLOSE MANAGEMENT LIMITED | 06314957 | 17/07/2007 | 10/09/2013 | Silver |