| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Copipe Installations Ltd | SC150315 | 11/11/1994 | Dissolved |
| DREELAN SERVICES LIMITED | SC180550 | 23/01/1998 | Silver |
| F.T.P. Pipeline Services Ltd | SC153727 | 07/06/1996 | Dissolved |
| HOWTH LIMITED | SC215087 | 14/03/2002 | Dissolved |
| Industrial & Pipeline Services Ltd | SC218637 | 14/03/2002 | Dissolved |
| Isandco Two Hundred & Ninety One Ltd | SC164969 | 24/07/1996 | Dissolved |
| Mike Dreelan Ltd | SC219469 | 08/06/2001 | Dissolved |
| R.F.O. Ltd | SC218467 | 14/03/2002 | Dissolved |
| Reservoir Recovery Solutions Ltd | SC197614 | 01/09/1999 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ALTUS INTERVENTION LIMITED | SC225200 | 14/11/2001 | 03/07/2008 | Gold |
| CARRACK LIMITED | SC186129 | 30/07/1998 | 29/04/2013 | Dissolved |
| Decaggs Realisations (No.5) Ltd | SC120136 | 01/05/1997 | 11/03/1998 | Dissolved |
| GAELIC ENERGY LIMITED | SC371319 | 21/02/2014 | 26/06/2019 | Dissolved |
| Psl Holdings Ltd | SC179062 | 23/06/1998 | 30/10/2001 | Dissolved |