| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| C P N PROJECT MANAGEMENT LIMITED | 03646448 | 12/10/1998 | Dissolved |
| CPN PROJECTS LTD | 11030834 | 25/10/2017 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BARFOOT ENERGY PROJECTS LTD | 07210977 | 01/01/2012 | 30/04/2015 | One Red Flag |
| HERRIARD BIO POWER LIMITED | 08453453 | 20/03/2013 | 30/04/2015 | One Red Flag |
| SUTTON GRANGE AD LIMITED | 07948621 | 09/11/2015 | 14/06/2016 | Two Red Flags |
| TAMAR ENERGY (HERMES HOLDINGS) LIMITED | 09090751 | 09/11/2015 | 14/06/2016 | Amber |
| TAMAR ENERGY (HOLDINGS) LIMITED | 09086861 | 09/11/2015 | 14/06/2016 | Amber |
| TAMAR ENERGY OPERATING COMPANY (ONE) LIMITED | 09090190 | 09/11/2015 | 14/06/2016 | Silver |
| TAMAR ORGANIC WASTE LIMITED | 09349622 | 09/11/2015 | 14/06/2016 | Gold |
| TAMAR RENEWABLE POWER (BASINGSTOKE) LIMITED | 09090824 | 09/11/2015 | 14/06/2016 | Amber |
| TAMAR RENEWABLE POWER (ESSEX) LIMITED | 07165617 | 09/11/2015 | 14/06/2016 | One Red Flag |
| TAMAR RENEWABLE POWER (HODDESDON) LIMITED | 09090821 | 09/11/2015 | 14/06/2016 | One Red Flag |