| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| COWLEY MANAGEMENT SERVICES LIMITED | 07554513 | 29/03/2011 | Dissolved |
| OP VENTURES LIMITED | 07133717 | 22/01/2010 | Gold |
| SEPRIFY (UK) LTD. | 13763753 | 24/11/2021 | Bronze |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ALDERBROOK COMMODITIES LIMITED | 03577280 | 02/06/2008 | 06/07/2009 | Dissolved |
| CAMBRIDGE ADVANCED MATERIALS LTD | 11958074 | 23/04/2019 | 07/06/2022 | Dissolved |
| COTES CONSULTING LIMITED | 08738071 | 12/11/2014 | 12/01/2016 | Dissolved |
| TENNANT METALS UK LIMITED | 06671832 | 13/08/2008 | 23/06/2009 | Dissolved |