| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| NUMBER 151 PROPRIETORS LIMITED | 01007492 | 15/06/2022 | One Red Flag |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AEGIS DEFENCE SERVICES LIMITED | 04541965 | 01/10/2007 | 25/03/2010 | Bronze |
| AFENTRA PLC | 01757721 | 08/09/2009 | 13/10/2016 | Bronze |
| AKER ENGINEERING MALAYSIA LTD | 00750847 | 07/03/2000 | 01/05/2003 | Silver |
| BURREN ENERGY PLC | 03492720 | 31/03/2005 | 01/02/2008 | Gold |
| EMERALD ENERGY PLC | FC017959 | 06/02/2004 | 14/10/2009 | Silver |
| ENTERPRISE OIL LIMITED | 01682048 | 01/10/1995 | 08/05/2002 | Gold |
| ENWELL ENERGY PLC | 04462555 | 15/04/2008 | 16/10/2017 | Silver |
| HELIUS ENERGY LIMITED | 05745512 | 10/08/2009 | 12/07/2011 | Dissolved |
| JOHNSON MATTHEY DAVY TECHNOLOGIES LIMITED | 00635311 | 07/03/2000 | 23/11/2001 | Silver |
| KELNIGAL HOLDINGS LIMITED | 04698674 | 26/09/2006 | 27/08/2015 | Dissolved |
| KVAERNER E&C HOLDINGS LIMITED | 00001125 | 07/03/2000 | 25/06/2003 | Insolvent |
| KVAERNER ENGINEERING & CONSTRUCTION UK LIMITED | 00070860 | 07/03/2000 | 01/05/2003 | Insolvent |
| KVAERNER METALS HOLDINGS LIMITED | 00095906 | 07/03/2000 | 01/05/2003 | One Red Flag |
| KVAERNER METALS LIMITED | 00006662 | 07/03/2000 | 01/05/2003 | Insolvent |
| Kvaerner Metals Overseas Holdings Ltd | 01085797 | 07/03/2000 | 01/05/2003 | Dissolved |
| Kvaerner T H Engineering Ltd | 02639298 | 23/11/2001 | 01/05/2003 | Dissolved |
| Kvaerner Trustees Ltd | 01251713 | 01/09/2000 | 31/12/2002 | Dissolved |
| NUMBER 151 PROPRIETORS LIMITED | 01007492 | 11/06/2004 | 16/03/2008 | One Red Flag |
| REGAL GROUP SERVICES LIMITED | 05252958 | 30/09/2010 | 16/10/2017 | Dissolved |
| REYNOLDS PARTNERS LIMITED | 06121223 | 21/05/2007 | 15/02/2010 | Dissolved |
| ROCKHOPPER MEDITERRANEAN LIMITED | 05323487 | 16/01/2012 | 11/08/2014 | Silver |
| SIMON CARVES LIMITED | 04169897 | 04/09/2006 | 26/05/2009 | Dissolved |
| SOUTH EAST WATER LIMITED | 02679874 | 01/03/2005 | 18/12/2007 | Amber |
| TRAFALGAR HOUSE TRUSTEES LIMITED | 01604930 | 01/07/2000 | 01/12/2002 | Gold |
| WORLEY FIELD SERVICES LIMITED | 00454398 | 07/03/2000 | 01/05/2003 | One Red Flag |