| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| EVANS WHITE ASSOCIATES LIMITED | 10130358 | 18/04/2016 | Amber |
| Erico Petroleum Information Limited | 02830178 | 28/02/2003 | Dissolved |
| I E D S Field Services Ltd | 02237988 | 28/02/2003 | Dissolved |
| L3HARRIS TECHNOLOGIES ASA LIMITED | 01730717 | 03/10/2019 | Insolvent |
| L3HARRIS TRENCHANT LTD | 09068202 | 31/08/2018 | Bronze |
| L3HARRIS TRL ELECTRONICS LIMITED | 05113142 | 23/01/2018 | Insolvent |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| DRILLING INFORMATION LIMITED | 06595556 | 01/10/2010 | 05/01/2012 | One Red Flag |
| Erico Data Services Ltd | 01199515 | 28/02/2003 | 20/10/2006 | Dissolved |
| FAIRCHILD SEMICONDUCTOR LIMITED | 03281920 | 13/11/2006 | 24/07/2009 | Dissolved |
| INTEGRATED EXPLORATION AND DEVELOPMENT SERVICES LIMITED | 02139847 | 28/02/2003 | 20/10/2006 | Dissolved |
| Ihs Energy Group Uk Ltd | 03780143 | 28/02/2003 | 20/10/2006 | Dissolved |
| PETROLEUM INFORMATION (ERICO) LIMITED | 01910064 | 28/02/2003 | 20/10/2006 | Dissolved |
| STIRLING DYNAMICS LIMITED | 02092114 | 09/03/2015 | 28/08/2015 | Silver |