| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BRUNEL BUSINESS PARK (ST AUSTELL) MANAGEMENT COMPANY LIMITED | 09351166 | 11/12/2014 | Gold |
| CLUSTER ENERGY LIMITED | 09521316 | 01/04/2015 | Dissolved |
| Decorative Products Group Ltd | 02548811 | 09/03/1993 | Dissolved |
| ETHICAL ENERGY DEVELOPMENTS LTD | 08164283 | 01/08/2012 | Bronze |
| Granger Helland Design Ltd | 02601790 | 16/04/1991 | Dissolved |
| Granger Helland Design Ltd | 02601790 | 16/04/1991 | Dissolved |
| Hereford Tile Company Limited | 02565450 | 28/09/1993 | Dissolved |
| OUTLOOK ENERGY LIMITED | 08702196 | 23/09/2013 | Dissolved |
| Shaws of Darwen Ltd | 02565436 | 09/03/1993 | Dissolved |
| TAMAR MANAGEMENT COMPANY (ST AUSTELL) LIMITED | 10118332 | 12/04/2016 | Gold |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BIOENERGY SYSTEMS LIMITED | 07500427 | 20/01/2011 | 06/01/2012 | Gold |
| Candy & Co Ltd | 02602967 | 09/03/1993 | 17/05/1995 | Dissolved |
| ETHICAL POWER GROUP LIMITED | 08623359 | 26/07/2013 | 28/03/2017 | One Red Flag |
| ETHICAL POWER RENEWABLES LIMITED | 07223160 | 14/04/2010 | 28/03/2017 | Amber |
| SMART GARDEN PRODUCTS LTD | 04583901 | 23/07/2003 | 29/03/2007 | Gold |
| VOLTECH INSTRUMENTS LIMITED | 02007598 | 02/06/1997 | 28/02/1998 | One Red Flag |
| VOLTECH LIMITED | 01994622 | 02/06/1997 | 28/02/1998 | Silver |