| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| AMBERLEY PROPERTIES (MK) LIMITED | 03601600 | 04/08/2011 | Dissolved |
| B R R C Ltd | 03208428 | 06/06/1996 | Dissolved |
| BLACK DOG HILL ESTATES LTD | 09003916 | 02/08/2015 | Silver |
| GRAMM INTERLINK RAIL LIMITED | 03789032 | 01/08/1999 | Dissolved |
| GRAMM INTERLINK RESOURCES LIMITED | 03460052 | 04/11/1997 | Dissolved |
| GRAMM INTERNATIONAL LIMITED | 05836307 | 05/06/2006 | Dissolved |
| GRAMM PARTNERSHIP HOUSING (CLIFTON) LIMITED | 05947911 | 27/09/2006 | Dissolved |
| GRAMM PARTNERSHIP HOUSING (WOOTTON) LIMITED | 06007125 | 23/11/2006 | Dissolved |
| H & N WINES LLP | OC359241 | 16/11/2011 | Dissolved |
| LAKERAY PROPERTIES LIMITED | 04871058 | 01/11/2003 | Dissolved |
| Platypus Investments Ltd | 03296277 | 24/12/1996 | Dissolved |
| Shield Environmental & Security Ltd | 02094859 | 31/12/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CEDAR GREEN HOMES LIMITED | 05813015 | 11/05/2006 | 19/12/2008 | Dissolved |
| GRAMM BARRIER SYSTEMS LIMITED | 05836133 | 02/06/2006 | 24/08/2010 | Gold |
| GRAMM INNOVATIONS LIMITED | 03443063 | 01/10/1997 | 26/10/1998 | Dissolved |
| GRAMM INTERLINK RAIL LIMITED | 03789032 | 01/08/1999 | 01/01/2001 | Dissolved |
| Gramm Environmental Ltd | 03443776 | 02/10/1997 | 21/10/2002 | Dissolved |
| Gramm Fabrications Ltd | 03492425 | 14/01/1998 | 01/08/2003 | Dissolved |
| Gramm for Schools Ltd | 06231315 | 30/04/2007 | 25/04/2008 | Dissolved |
| Lightcem Marketing Ltd | 03323075 | 16/01/1998 | 02/11/1998 | Dissolved |
| REDWOOD GARDENS MANAGEMENT COMPANY LIMITED | 04380898 | 27/06/2006 | 30/03/2016 | Dissolved |
| Water Dynamics Group Ltd | 04296886 | 12/04/2002 | 22/07/2002 | Dissolved |