| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ACTIVE AIR CONDITIONING LIMITED | SC198646 | 04/04/2012 | One Red Flag |
| CLAUD HAMILTON ELECTRICAL SERVICES LIMITED | SC035693 | 14/11/1988 | Silver |
| FES (SCOTLAND) LIMITED | SC337744 | 13/02/2008 | Not Trading |
| FES CONTRACTS LIMITED | SC309744 | 06/10/2006 | One Red Flag |
| FES FM LIMITED | SC220049 | 26/07/2001 | Bronze |
| FES HOLDCO LIMITED | SC637820 | 02/08/2019 | One Red Flag |
| FES HOLDINGS LIMITED | SC618500 | 17/01/2019 | One Red Flag |
| FES LIMITED | SC053848 | 07/10/1988 | One Red Flag |
| FES MARKETING LIMITED | SC309743 | 06/10/2006 | Bronze |
| FES PROPERTY SERVICES LIMITED | SC387785 | 28/10/2010 | Not Trading |
| FES RENEWABLES LIMITED | SC387787 | 28/10/2010 | Dissolved |
| FES SERVICES LIMITED | SC309750 | 06/10/2006 | Not Trading |
| FES SUPPORT SERVICES LIMITED | SC387816 | 28/10/2010 | Bronze |
| FES SYSTEMS LIMITED | SC309748 | 06/11/2006 | One Red Flag |
| FES UTILITIES LIMITED | SC309747 | 06/10/2006 | Not Trading |
| FORTH AND OBAN (STIRLING) LIMITED | SC618478 | 17/01/2019 | Bronze |
| FORTH AND OBAN LIMITED | SC169861 | 03/12/1996 | Silver |
| FORTH ELECTRICAL SERVICES LIMITED | SC207777 | 05/07/2000 | Silver |
| FORTH HOLDCO LIMITED | SC201964 | 30/11/1999 | Silver |
| FORTH HOLDINGS (SUPPORT SERVICES) LIMITED | SC401258 | 08/06/2011 | One Red Flag |
| FORTH HOLDINGS LIMITED | SC616186 | 13/12/2018 | Bronze |
| FORTH LIMITED | SC233379 | 27/06/2003 | Silver |
| FORTH MANAGEMENT LIMITED | SC233380 | 27/06/2003 | Bronze |
| FORTH PPP LIMITED | SC220041 | 11/06/2001 | Silver |
| FORTH RENEWABLES LIMITED | SC387786 | 28/10/2010 | Not Trading |
| FORTH SERVICES LIMITED | SC233381 | 27/06/2003 | Bronze |
| FORTH UTILITIES LIMITED | SC233382 | 27/06/2003 | Bronze |
| OBAN ELECTRICAL SERVICES LIMITED | SC049141 | 26/04/1989 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| FES RESOURCES LIMITED | SC309742 | 06/10/2006 | 19/04/2022 | Bronze |