| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| HIGH BIRD DEVELOPMENTS LIMITED | 07105156 | 01/03/2010 | Dissolved |
| RJW GROUP HOLDINGS LIMITED | 10460169 | 03/11/2016 | Dissolved |
| RJW LEINTHALL (HOLDINGS) LIMITED | 07141381 | 29/07/2010 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CELTIC ENERGY LIMITED | 02997376 | 16/08/2004 | 19/11/2012 | Amber |
| CELTIC ENVIRONMENTAL DEVELOPMENTS LIMITED | 05458168 | 14/05/2007 | 25/01/2016 | Insolvent |
| CELTIC GROUP HOLDINGS | 02885745 | 02/07/2004 | 19/11/2012 | Not Trading |
| CELTIC MINING GROUP LIMITED | 05110139 | 20/05/2004 | 19/11/2012 | Gold |
| CELTIC MINING LIMITED | 02984560 | 03/07/2006 | 22/11/2012 | Not Trading |
| CELTIC MINING OPERATIONS GROUP LIMITED | 06118256 | 27/02/2007 | 19/11/2012 | Silver |
| FILTERCITE LTD | 10444508 | 01/06/2017 | 16/12/2022 | Bronze |