| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| NED-SCOTIA LIMITED | 11914152 | 29/03/2019 | Bronze |
| Oakridge Consultancy Ltd | 05080624 | 22/03/2004 | Dissolved |
| Oakridge Consultancy Ltd | 05080624 | 22/03/2004 | Dissolved |
| SCOTIA GAS NETWORKS LIMITED | 04958135 | 14/03/2019 | Bronze |
| SCOTLAND GAS NETWORKS PLC | SC264065 | 14/03/2019 | Silver |
| SGN COMMERCIAL SERVICES LIMITED | 05969465 | 14/03/2019 | Gold |
| SGN CONNECTIONS LIMITED | 05618886 | 14/03/2019 | Amber |
| SGN CONTRACTING LIMITED | 05372264 | 14/03/2019 | Amber |
| SGN EVOLVE NETWORK LTD | 08822715 | 14/03/2019 | Amber |
| SGN FUTURES LIMITED | 13289392 | 24/03/2021 | Amber |
| SGN HEAT NETWORKS LIMITED | 13421041 | 26/05/2021 | Gold |
| SGN LESSONA LIMITED | 11727758 | 14/03/2019 | Amber |
| SGN MIDCO LIMITED | 11050000 | 14/03/2019 | Bronze |
| SGN PLACE LIMITED | 11245555 | 14/03/2019 | Amber |
| SGN PLEDGECO LIMITED | 11049371 | 14/03/2019 | Gold |
| SGN SMART LIMITED | 05618883 | 14/03/2019 | Gold |
| SOUTHERN GAS NETWORKS PLC | 05167021 | 14/03/2019 | Bronze |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AECOM DESIGN BUILD LIMITED | 02699219 | 03/04/1995 | 23/04/1997 | Silver |
| ALTRAD BABCOCK LIMITED | 00839354 | 01/11/1993 | 18/03/1997 | Amber |
| AMEC BKW LIMITED | 00169831 | 01/11/1993 | 31/05/1997 | Gold |
| ASIA RESOURCE MINERALS LIMITED | 07460129 | 01/01/2014 | 27/06/2014 | Dissolved |
| Alstom Trust Ltd | 03662311 | 23/03/2004 | 30/06/2004 | Dissolved |
| BABCOCK DEFENCE SYSTEMS LIMITED | 02999029 | 14/06/1996 | 31/05/1997 | Bronze |
| BABCOCK ENERGY LIMITED | 01160552 | 01/11/1993 | 29/09/1995 | Strike Off |
| BABCOCK HOLDINGS LIMITED | 02955502 | 29/09/1994 | 31/05/1997 | Amber |
| BABCOCK INTERNATIONAL GROUP PLC | 02342138 | 04/10/1993 | 31/05/1997 | Silver |
| BABCOCK INTERNATIONAL LIMITED | 00065805 | 01/11/1993 | 31/05/1997 | Amber |
| BABCOCK INVESTMENTS LIMITED | 00165086 | 01/11/1993 | 31/05/1997 | Silver |
| BABCOCK MANAGEMENT LIMITED | 00107414 | 05/04/1994 | 31/05/1997 | Bronze |
| BABCOCK NOMINEES LIMITED | 00711774 | 01/11/1993 | 31/05/1997 | Dissolved |
| BABCOCK OVERSEAS INVESTMENTS LIMITED | 02669327 | 01/11/1993 | 31/05/1997 | One Red Flag |
| BABCOCK PROPERTIES LIMITED | 00496683 | 01/11/1993 | 31/05/1997 | Dissolved |
| BABCOCK SUPPORT SERVICES LIMITED | SC099884 | 05/07/1994 | 31/05/1997 | Bronze |
| BABCOCK UK FINANCE | 00096730 | 01/11/1993 | 31/05/1997 | Bronze |
| CLAUDIUS PETERS (UK) LIMITED | 01148578 | 01/11/1993 | 31/05/1997 | Gold |
| DISCOVERIE GROUP PLC | 02008246 | 01/03/2015 | 30/06/2015 | Amber |
| ELEMENTIS PLC | 03299608 | 20/10/2014 | 29/04/2020 | Gold |
| GE POWER UK | 00778482 | 06/04/1998 | 05/06/1999 | Not Trading |
| GE VERNOVA PENSION TRUST LIMITED | 03579649 | 23/03/2004 | 30/06/2004 | Not Trading |
| GENERAL ELECTRIC ENERGY UK LIMITED | 04267931 | 17/04/2002 | 29/02/2004 | Bronze |
| GENERAL ELECTRIC UK HOLDINGS LTD. | 04267912 | 17/04/2002 | 29/02/2004 | Gold |
| INTERSERVE PLC | 00088456 | 01/08/2014 | 09/10/2019 | Insolvent |
| Newbold Power Uk | 01174710 | 05/06/2000 | 29/02/2004 | Dissolved |
| PEEL PORTS (BIHL) LIMITED | 00946273 | 01/11/1993 | 31/05/1997 | Dissolved |
| SOUTH EAST WATER LIMITED | 02679874 | 01/04/2015 | 31/03/2022 | One Red Flag |
| Tickford Rail Ltd | 02580965 | 01/11/1993 | 06/06/1995 | Dissolved |
| UNITED UTILITIES GROUP PLC | 06559020 | 29/04/2008 | 25/07/2014 | Silver |
| UNITED UTILITIES PLC | 02366616 | 04/04/2005 | 28/07/2008 | Bronze |
| UNITED UTILITIES WATER LIMITED | 02366678 | 31/03/2011 | 25/07/2014 | Silver |
| VESUVIUS HOLDINGS LIMITED | 00251977 | 19/07/2004 | 31/12/2012 | Silver |
| ZIA UK LIMITED | 02470681 | 16/12/1993 | 12/10/1994 | Dissolved |
| Zia Europe Ltd | 02470683 | 14/01/1994 | 12/10/1994 | Dissolved |