| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| DENCASTLE LIMITED | SC331758 | 11/10/2007 | Dissolved |
| SAWAFI VULCAN NEWCO LIMITED | SC748057 | 01/11/2022 | Silver |
| SPRINGDON LIMITED | SC395422 | 14/03/2011 | Bronze |
| THE DALMUINZIE ROAD COMPANY LTD. | SC590569 | 06/03/2018 | Not Trading |
| VULCAN COMPLETION PRODUCTS UK LIMITED | SC577920 | 04/10/2017 | Bronze |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| DOWNHOLE PRODUCTS LIMITED | SC145401 | 12/10/1993 | 31/05/2015 | Bronze |
| DOWNHOLE PRODUCTS UK HOLDCO II LIMITED | SC340395 | 27/11/2008 | 31/05/2015 | Not Trading |
| DOWNHOLE PRODUCTS UK HOLDCO LIMITED | SC340137 | 27/11/2008 | 31/05/2015 | Not Trading |
| IAN HAY (ENGINEERING) LIMITED | SC128121 | 01/11/2001 | 31/05/2015 | Not Trading |