| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ACERTEC LIMITED | 03721271 | 19/01/2007 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ACERTEC ENGINEERING LIMITED | 00555532 | 14/06/2010 | 30/11/2015 | Not Trading |
| ACERTEC UK LIMITED | 05398699 | 14/06/2010 | 30/11/2015 | Not Trading |
| BLOOM ENGINEERING HOLDINGS LIMITED | 09777995 | 15/09/2015 | 22/06/2018 | Dissolved |
| BRITANNIA HEATEX LIMITED | 04880608 | 09/12/2015 | 07/01/2016 | Dissolved |
| CALEDONIA STERLING LIMITED | 09769351 | 09/09/2015 | 22/06/2018 | Dissolved |
| STADCO AUTOMOTIVE LIMITED | 07163622 | 27/04/2010 | 30/11/2015 | Silver |
| STADCO EUROPE LIMITED | 00386527 | 14/06/2010 | 30/11/2015 | Dissolved |
| STADCO HOLDINGS LTD. | 04215953 | 14/06/2010 | 30/11/2015 | Dissolved |
| STERLING ARGO HOLDINGS LIMITED | 09777945 | 15/09/2015 | 22/06/2018 | Dissolved |
| STERLING CREWKERNE LIMITED | 09816334 | 08/10/2015 | 22/06/2018 | Silver |
| STERLING INDUSTRIES LIMITED | 00299644 | 02/12/2013 | 22/06/2018 | Silver |
| STERLING PCC HOLDINGS LIMITED | 09777940 | 15/09/2015 | 02/05/2017 | Silver |
| STERLING SI PUMPS HOLDINGS LIMITED | 09816327 | 08/10/2015 | 18/10/2016 | Silver |
| STERLING SKID PIPE HOLDINGS LIMITED | 09777950 | 15/09/2015 | 22/06/2018 | Dissolved |
| STERLING THERMAL TECHNOLOGY MIDCO LIMITED | 09778071 | 15/09/2015 | 22/06/2018 | One Red Flag |
| THAME ENERGY SYSTEMS LIMITED | 04886028 | 09/12/2015 | 07/01/2016 | Dissolved |
| THE PUMP CENTRE LIMITED | 03247751 | 09/12/2015 | 07/01/2016 | Not Trading |
| URQUHART ENGINEERING COMPANY LIMITED | 00211527 | 09/12/2015 | 07/01/2016 | Dissolved |
| WSCC MOTORSPORT LIMITED | 04336633 | 01/05/2013 | 10/12/2014 | Gold |