| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Anglia Creative Ltd | 02399885 | 30/06/1991 | Dissolved |
| DENVER BARNS LTD | 05224539 | 07/09/2004 | Dissolved |
| DENVER BARNS LTD | 05224539 | 07/09/2004 | Dissolved |
| Denver Windmill Ltd | 03498914 | 03/02/1998 | Dissolved |
| Ecofilter Europe Ltd | SC082660 | 28/12/1988 | Dissolved |
| Forbes Enviro Ltd | 03319974 | 18/02/1997 | Dissolved |
| Forbes Plastics Ltd | 02250585 | 14/11/1991 | Dissolved |
| Forbes Tanks Ltd | 02896279 | 09/02/1994 | Dissolved |
| Forbes,Kenneth,(Plasfab) Ltd | SC082661 | 28/12/1988 | Dissolved |
| Forbes,Kenneth,(Steelwork) Ltd | 01186007 | 30/12/1991 | Dissolved |
| Inspection & Sitework Services Ltd | SC059341 | 28/12/1988 | Dissolved |
| Kenneth Forbes (Holdings Scotland) Ltd | 01714811 | 30/12/1991 | Dissolved |
| Nordic Nets Limited | 02538274 | 10/09/1991 | Dissolved |
| Puma Plastics Ltd | SC088410 | 28/12/1988 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| FORBES TECHNOLOGIES LIMITED | 01772436 | 30/12/1990 | 30/04/2018 | Silver |
| Forbes Tanks Ltd | 02896279 | 09/02/1994 | 04/03/1994 | Dissolved |
| KENNETH FORBES (HOLDINGS) LIMITED | SC082870 | 28/12/1988 | 30/04/2018 | Silver |
| TANK INSPECTIONS LIMITED | 07842034 | 10/11/2011 | 30/04/2018 | Silver |
| THE PALL RING COMPANY LIMITED | 05536012 | 20/01/2006 | 30/04/2018 | Gold |