| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| 4R CONSULTING LIMITED | 09619390 | 02/06/2015 | Dissolved |
| CARBON PLUS INTERNATIONAL LIMITED | 09801025 | 30/09/2015 | Dissolved |
| CRACKING ENERGY MACHINES LIMITED | 07135097 | 25/01/2010 | Dissolved |
| EC PROJECT 2 LIMITED | 10137720 | 23/07/2018 | Dissolved |
| ENERGY CIRCLE PLC | 09634725 | 22/08/2016 | Dissolved |
| ENERGY CIRCLE SERVICES LIMITED | 11617761 | 11/10/2018 | Dissolved |
| ENFO ENERGY UK LIMITED | 07153636 | 10/02/2010 | Dissolved |
| N & D ASSOCIATES LIMITED | 06852818 | 19/03/2009 | Dissolved |
| SHARMAN ENERGY LTD | 07467838 | 14/12/2010 | Dissolved |
| TURBOGAS LIMITED | 11595190 | 28/09/2018 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BOTOFOGA LIMITED | 06436246 | 11/01/2008 | 12/08/2008 | Dissolved |
| BRITNED DEVELOPMENT LIMITED | 04251409 | 22/11/2004 | 04/10/2007 | Silver |
| EC PROJECT 1 LIMITED | 10138213 | 23/07/2018 | 24/01/2020 | Dissolved |
| EC PROJECT 5 LIMITED | 11562980 | 14/02/2019 | 22/04/2020 | Dissolved |
| ENERGY CIRCLE MANAGEMENT LIMITED | 10033711 | 13/01/2017 | 26/01/2023 | Strike Off |
| MAPLE LEAF RECYCLING LTD. | 09310730 | 14/11/2014 | 21/01/2016 | Dissolved |
| NATIONAL GRID BRAZIL B.V. | FC026154 | 16/08/2005 | 30/09/2009 | Dissolved |
| NATIONAL GRID FOURTEEN LIMITED | 04382950 | 26/04/2005 | 30/09/2009 | Dissolved |
| NATIONAL GRID THIRTY SIX LIMITED | 04611486 | 01/04/2005 | 30/09/2009 | Dissolved |
| THERMODYNAMIC REPROCESSING (DORSET) LIMITED | 07940193 | 07/02/2012 | 21/01/2016 | Dissolved |
| THERMODYNAMIC REPROCESSING (SOMERSET) LIMITED | 07939750 | 07/02/2012 | 21/01/2016 | Dissolved |
| TIREC LTD | 07534972 | 08/10/2012 | 01/06/2015 | Dissolved |