| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| PANTHEON INFRASTRUCTURE PLC | 13611678 | 04/10/2021 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AFFINITY WATER LIMITED | 02546950 | 24/07/2013 | 29/09/2020 | Amber |
| CALISEN GROUP (HOLDINGS) LIMITED | 12383518 | 13/01/2020 | 12/03/2021 | Bronze |
| ENERGIA CAPITAL LIMITED | NI032456 | 06/10/2000 | 07/02/2011 | Bronze |
| ENERGIA GROUP NI HOLDINGS LIMITED | NI033250 | 01/09/2000 | 07/02/2011 | Bronze |
| ENERGIA NI HOLDCO LIMITED | NI032563 | 01/08/2001 | 24/10/2007 | Bronze |
| ENERGIA POWER RESOURCES LIMITED | 03579116 | 16/02/2001 | 01/08/2007 | Not Trading |
| JOHN LAING GROUP LIMITED | 05975300 | 16/01/2015 | 09/05/2019 | Gold |
| JOHN LAING HOLDCO LIMITED | 05935957 | 26/01/2015 | 09/05/2019 | Silver |
| JOHN LAING INVESTMENTS LIMITED | 00780225 | 17/08/2011 | 09/05/2019 | Bronze |
| JOHN LAING LIMITED | 01345670 | 01/05/2011 | 09/05/2019 | Silver |
| JOHN LAING SERVICES LIMITED | 01363079 | 01/05/2011 | 08/05/2019 | Silver |
| LAING INVESTMENTS MANAGEMENT SERVICES LIMITED | 03600959 | 10/05/2011 | 09/05/2019 | One Red Flag |
| LAING PROPERTY HOLDINGS LIMITED | 00806760 | 01/05/2011 | 09/05/2019 | Gold |
| NORTHERN IRELAND ELECTRICITY NETWORKS LIMITED | NI026041 | 06/10/2000 | 04/03/2008 | Silver |
| POWER NI ENERGY LIMITED | NI027394 | 21/12/2010 | 07/02/2011 | Silver |
| SONI LIMITED | NI038715 | 25/03/2003 | 11/09/2007 | Bronze |
| VIRIDIAN CAPITAL (UK) LIMITED | NI032564 | 23/03/2005 | 07/02/2011 | Dissolved |
| VIRIDIAN CORPORATION LIMITED | NI031705 | 25/03/2003 | 01/08/2007 | Dissolved |
| VIRIDIAN ENTERPRISES LIMITED | NI032955 | 01/08/2001 | 01/08/2007 | Dissolved |