| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BUCHAN 1 LIMITED | SC643850 | 20/06/2024 | Silver |
| BUCHAN 2 LIMITED | SC644003 | 10/09/2024 | Bronze |
| D2ZERO LIMITED | SC782625 | 21/02/2024 | Bronze |
| International Tubular Services (Baku) Ltd | SC279291 | 31/01/2009 | Dissolved |
| Its Leasing Ltd | SC213677 | 31/01/2009 | Dissolved |
| KELTON ENGINEERING LIMITED | SC129648 | 14/10/2024 | Amber |
| NET ZERO TECHNOLOGY CENTRE LIMITED | SC531384 | 23/08/2018 | Amber |
| THREE60 ENERGY LIMITED | 10366459 | 08/09/2016 | Amber |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| INTERNATIONAL TUBULAR SERVICES (PAKISTAN) LIMITED | SC251287 | 31/01/2009 | 08/06/2012 | Dissolved |
| INTERNATIONAL TUBULAR SERVICES LIMITED | SC111913 | 31/01/2009 | 08/06/2012 | Amber |
| ITS GLOBAL SERVICES LTD | SC328008 | 31/01/2009 | 08/06/2012 | Dissolved |
| ITS OILFIELD SUPPLY LTD | SC330803 | 31/01/2009 | 08/06/2012 | Dissolved |
| ITS TUBULAR SERVICES (HOLDINGS) LIMITED | SC246080 | 01/10/2007 | 08/06/2012 | Dissolved |
| SAFFRON UK MIDCO LIMITED | SC466130 | 18/12/2013 | 21/03/2014 | Dissolved |
| SAFFRON UK TOPCO LIMITED | SC466123 | 18/12/2013 | 21/03/2014 | Dissolved |
| SEANAMIC GROUP LIMITED | SC486006 | 03/08/2017 | 10/05/2024 | Silver |
| STARN ENERGY SERVICES GROUP LIMITED | SC466142 | 18/12/2013 | 21/03/2014 | One Red Flag |
| STARN GROUP LIMITED | SC466138 | 18/12/2013 | 21/03/2014 | One Red Flag |