| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CHILLINGTON LIMITED | 03299320 | 22/01/1997 | Silver |
| KEYFORT LIMITED | 04009023 | 22/06/2000 | One Red Flag |
| KEYFORT LIMITED | 04009023 | 22/06/2000 | One Red Flag |
| SPILL MANAGEMENT OPERATIONS LIMITED | 10227704 | 30/08/2022 | Not Trading |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| 4-Sight (Software) Ltd | 03126535 | 03/04/1996 | 31/07/2001 | Dissolved |
| Azzurri Technology Ltd | 03371988 | 07/02/2007 | 28/09/2007 | Dissolved |
| Azzurri Technology Ltd | 03371988 | 04/04/2002 | 28/09/2007 | Dissolved |
| CLICKAIR LIMITED | 04645154 | 14/02/2003 | 12/10/2010 | Dissolved |
| CLICKAIR LIMITED | 04645154 | 14/02/2003 | 12/10/2010 | Dissolved |
| EAST DORSET TIC LIMITED | 08809040 | 27/03/2020 | 31/03/2023 | One Red Flag |
| HALLIN MARINE UK LIMITED | 05668092 | 06/01/2006 | 30/11/2009 | One Red Flag |
| OIL SPILL RESPONSE (AMERICAS) LIMITED | 08319575 | 05/12/2012 | 05/06/2019 | Insolvent |
| OIL SPILL RESPONSE (CAPPING) LIMITED | 07968910 | 29/02/2012 | 05/06/2019 | Amber |
| OIL SPILL RESPONSE LIMITED | 01808594 | 07/12/2011 | 13/06/2019 | Silver |
| OSRC (NORWAY) LIMITED | 08126766 | 02/07/2012 | 15/05/2019 | Amber |
| OSRC (SOUTH AFRICA) LIMITED | 08126897 | 02/07/2012 | 15/05/2019 | One Red Flag |
| THE PRIEST'S HOUSE MUSEUM TRUST | 03488337 | 27/03/2020 | 31/03/2023 | Silver |
| VICOMSOFT LIMITED | 04352786 | 28/03/2002 | 11/11/2016 | Dissolved |