| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ASTON REINVESTMENT GUARANTEE COMPANY LTD | 02422872 | 20/07/2021 | Gold |
| THE MANOR HOUSE MANAGEMENT (TORQUAY) LIMITED | 04685367 | 02/11/2013 | Amber |
| UK POWER RESERVE (CARRINGTON) LIMITED | 09674183 | 07/07/2015 | Dissolved |
| UK POWER RESERVE (GLOBE) LIMITED | 09674162 | 07/07/2015 | Dissolved |
| UK POWER RESERVE (KINGS ROAD) LIMITED | 09159918 | 04/01/2016 | Dissolved |
| UK POWER RESERVE (TONYPANDY) LIMITED | 09838106 | 22/10/2015 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Brand Holdings Ltd | 03873919 | 12/04/2000 | 31/12/2002 | Dissolved |
| DAVID BACK PROJECT MANAGEMENT LIMITED | 02898093 | 20/03/2009 | 18/06/2010 | Dissolved |
| DBK HEALTH LIMITED | 06315597 | 03/09/2008 | 18/06/2010 | Dissolved |
| DERWENT COGENERATION LIMITED | 02650621 | 19/06/2018 | 31/01/2019 | Dissolved |
| DISTRICT ENERGY LIMITED | 02362017 | 04/01/2016 | 31/01/2019 | Dissolved |
| EDMONTON GOYNE ADAMS LIMITED | 04442455 | 03/09/2008 | 18/06/2010 | Dissolved |
| EDMONTON GROUP LIMITED | 02904479 | 03/09/2008 | 18/06/2010 | Dissolved |
| EDMONTON HOLDINGS LIMITED | 05506118 | 03/09/2008 | 18/06/2010 | Dissolved |
| EMPRISE GROUP HOLDINGS LIMITED | 06207106 | 14/05/2007 | 04/09/2008 | Dissolved |
| FLOOID BIDCO LIMITED | 11022804 | 09/07/2019 | 11/06/2020 | Silver |
| FLOOID FINCO LIMITED | 11021539 | 09/07/2019 | 11/06/2020 | Silver |
| FLOOID HOLDINGS (INTERNATIONAL) LIMITED | 07962309 | 09/07/2019 | 11/06/2020 | Gold |
| FLOOID HOLDINGS LIMITED | 04156083 | 09/07/2019 | 11/06/2020 | Silver |
| FLOOID INTERNATIONAL HOLDINGS LIMITED | 10163798 | 09/07/2019 | 11/06/2020 | Silver |
| FLOOID LIMITED | 01459419 | 09/07/2019 | 11/06/2020 | Gold |
| FLOOID MIDCO LIMITED | 11020228 | 09/07/2019 | 11/06/2020 | Silver |
| FLOOID TOPCO LIMITED | 11015652 | 09/07/2019 | 11/06/2020 | Amber |
| GB DEVELOPERS LIMITED | 04480584 | 04/01/2016 | 31/01/2019 | Silver |
| HALLFAST LIMITED | 02898095 | 20/03/2009 | 18/06/2010 | Dissolved |
| HUGHES RAIL LIMITED | 03722154 | 06/05/2003 | 23/02/2004 | Dissolved |
| INGLEBY (1653) LIMITED | 05436711 | 01/12/2005 | 29/07/2008 | Dissolved |
| KEVIN FOREMAN AND ASSOCIATES LIMITED | 02979635 | 20/03/2009 | 18/06/2010 | Dissolved |
| LINDSAY HOLDINGS LIMITED | SC157597 | 20/02/2003 | 01/05/2003 | Dissolved |
| LINDSAY PLANT LIMITED | SC049012 | 02/02/2003 | 01/05/2003 | Dissolved |
| NEWFLEX LEASES LIMITED | 02767719 | 01/09/2009 | 15/04/2013 | Amber |
| NOVEUS LIMITED | 05879480 | 03/09/2008 | 18/06/2010 | One Red Flag |
| PCMS MARKETING SERVICES LIMITED | 02587300 | 09/07/2019 | 11/06/2020 | Dissolved |
| REPONO BIDCO LIMITED | 09846864 | 16/11/2015 | 31/01/2019 | Dissolved |
| REPONO CM HOLDCO LIMITED | 09846907 | 16/11/2015 | 31/01/2019 | Dissolved |
| REPONO HOLDCO 1 LIMITED | 09844502 | 16/11/2015 | 31/01/2019 | Bronze |
| REPONO INTERCO LIMITED | 09845638 | 16/11/2015 | 31/01/2019 | Dissolved |
| REPONO MIDCO LIMITED | 09846187 | 16/11/2015 | 31/01/2019 | Dissolved |
| ROWDEN REALISATIONS 2 LIMITED | 04333841 | 24/06/2003 | 28/04/2005 | Dissolved |
| ROWDEN REALISATIONS 4 LIMITED | 01708559 | 24/06/2003 | 28/04/2005 | One Red Flag |
| ROWDEN REALISATIONS 5 LIMITED | 03030000 | 04/03/2004 | 05/03/2004 | Dissolved |
| SIGBAT A LIMITED | 11296779 | 06/04/2018 | 31/01/2019 | Dissolved |
| SIGBAT B LIMITED | 11296838 | 06/04/2018 | 31/01/2019 | Dissolved |
| SIGBAT C LIMITED | 11296850 | 06/04/2018 | 31/01/2019 | Dissolved |
| SIGBAT D LIMITED | 11296843 | 06/04/2018 | 31/01/2019 | Dissolved |
| SIGBAT E LIMITED | 11296931 | 06/04/2018 | 31/01/2019 | Dissolved |
| SIGBAT F LIMITED | 11296974 | 06/04/2018 | 31/01/2019 | Dissolved |
| SIGBAT G LIMITED | 11297020 | 06/04/2018 | 31/01/2019 | Dissolved |
| SIGBAT H LIMITED | 11297060 | 06/04/2018 | 31/01/2019 | Dissolved |
| SIGBAT I LIMITED | 11297058 | 06/04/2018 | 31/01/2019 | Dissolved |
| SIGBAT J LIMITED | 11297086 | 06/04/2018 | 31/01/2019 | Dissolved |
| SIGBAT K LIMITED | 11297079 | 06/04/2018 | 31/01/2019 | Dissolved |
| SIGBAT L LIMITED | 11297092 | 06/04/2018 | 31/01/2019 | Dissolved |
| STALLINGBOROUGH PROPERTIES LIMITED | 06809430 | 04/01/2016 | 31/01/2019 | Silver |
| TREK INVESTCO LIMITED | 03769224 | 29/12/1999 | 31/05/2002 | Gold |
| UK CAPACITY RESERVE LIMITED | 09152381 | 29/07/2014 | 31/01/2019 | Gold |
| UK DYNAMIC RESERVE LIMITED | 10890652 | 31/07/2017 | 31/01/2019 | Dissolved |
| UK ENERGY RESERVE LIMITED | 10260309 | 04/07/2016 | 31/01/2019 | Bronze |
| UK FLEXIBLE RESERVE LIMITED | 10896260 | 02/08/2017 | 31/01/2019 | Dissolved |
| UK POWER RESERVE (ASFORDBY) LIMITED | 07618247 | 04/01/2016 | 31/01/2019 | One Red Flag |
| UK POWER RESERVE (LTC) LIMITED | 07767865 | 04/01/2016 | 31/01/2019 | Dissolved |
| UK POWER RESERVE (MONCKTON ROAD) LIMITED | 07441588 | 04/01/2016 | 31/01/2019 | Amber |
| UK POWER RESERVE (SOUTH CORNELLY) LIMITED | 07923609 | 04/01/2016 | 31/01/2019 | Dissolved |
| UK POWER RESERVE (ST HELENS) LIMITED | 07677934 | 04/01/2016 | 31/01/2019 | Dissolved |
| UK POWER RESERVE (STYAL ROAD) LIMITED | 07692343 | 04/01/2016 | 31/01/2019 | Dissolved |
| UK POWER RESERVE (TRUMFLEET) LTD | 07004203 | 04/01/2016 | 31/01/2019 | Bronze |
| UK POWER RESERVE LIMITED | 07385282 | 22/07/2014 | 31/01/2019 | Bronze |
| UK UTILITY RESERVE LIMITED | 11008814 | 11/10/2017 | 31/01/2019 | Silver |