| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| EDEN SMITH CONSULTANTS LIMITED | 10023628 | 24/02/2016 | Bronze |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| EARTH-I LTD | 08508188 | 01/09/2015 | 22/08/2024 | Bronze |
| O I L Gulf Ltd | SC051607 | 02/11/1990 | 31/03/1995 | Dissolved |
| O I L Marine Ltd | 01556284 | 01/06/1991 | 01/02/1993 | Dissolved |
| OIL SPILL RESPONSE (AMERICAS) LIMITED | 08319575 | 05/12/2012 | 13/03/2013 | Dissolved |
| OIL SPILL RESPONSE (CAPPING) LIMITED | 07968910 | 29/02/2012 | 13/03/2013 | Amber |
| OIL SPILL RESPONSE LIMITED | 01808594 | 21/06/2006 | 18/06/2008 | Silver |
| OIL SPILL RESPONSE TRUSTEES LIMITED | 03910441 | 17/01/2000 | 13/03/2013 | Dissolved |
| OIL SPILL SERVICE CENTRE LIMITED | 03119353 | 20/12/1999 | 14/03/2013 | Dissolved |
| OSRC (NORWAY) LIMITED | 08126766 | 02/07/2012 | 13/03/2013 | Amber |
| OSRC (SOUTH AFRICA) LIMITED | 08126897 | 02/07/2012 | 13/03/2013 | One Red Flag |
| TIDEWATER MARINE NORTH SEA LIMITED | 01000605 | 22/07/1992 | 31/03/1995 | Dissolved |