| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Circuitsun Ltd | 02291344 | 31/12/1990 | Dissolved |
| Gaffney Cline & Associates Services Ltd | 01389513 | 31/01/1991 | Dissolved |
| UPFOLDS LIMITED | 08705360 | 25/09/2013 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| DOMINIE ENTERPRISES LIMITED | 05640609 | 03/11/2008 | 01/08/2023 | Gold |
| DOMINIE ENTERPRISES LIMITED | 05640609 | 30/11/2005 | 01/08/2023 | Gold |
| GAFFNEY, CLINE & ASSOCIATES LIMITED | 01122740 | 31/12/1991 | 04/04/2008 | Bronze |
| GCA INTERNATIONAL LIMITED | 00890167 | 31/12/1990 | 04/04/2008 | One Red Flag |
| Gca Corporate Ltd. | 01587371 | 21/10/1992 | 04/04/2008 | Dissolved |
| S P E Europe Ltd | 01338917 | 20/11/1991 | 06/02/1997 | Dissolved |
| SOCIETY OF PETROLEUM ENGINEERS EUROPE LIMITED | 02778741 | 12/01/1993 | 06/02/1997 | Silver |
| SPE TRADING LIMITED | 02365974 | 14/03/1991 | 11/07/1995 | One Red Flag |
| SPE TRADING LIMITED | 02365974 | 14/03/1991 | 30/06/2001 | One Red Flag |
| SPE VENTURES LIMITED | 02538982 | 12/09/1991 | 07/07/2002 | One Red Flag |
| THE ALTON COLLEGE FOUNDATION | 03899899 | 04/11/2003 | 15/03/2009 | Gold |