| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| I C S Research Ltd | 01967375 | 15/12/1997 | Dissolved |
| I C S Scotland Ltd | SC085289 | 15/12/1997 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| FIELD ELECTRONICS LIMITED | 02812849 | 30/06/1993 | 15/08/2001 | Gold |
| FIELD ELECTRONICS LIMITED | 02812849 | 01/08/1993 | 15/08/2001 | Gold |
| GP-ELLIOTT ELECTRONIC SYSTEMS LIMITED | 02397549 | 15/12/1997 | 17/08/2000 | Dissolved |
| ICS TRIPLEX LIMITED | 03249161 | 15/12/1997 | 17/08/2000 | Dissolved |
| ICS TRIPLEX TECHNOLOGY LIMITED | 01017322 | 15/12/1997 | 17/08/2000 | Dissolved |
| INDUSTRIAL CONTROL SERVICES GROUP LTD | 02553840 | 09/12/1997 | 17/08/2000 | Dissolved |
| Ics Properties Ltd | 02159591 | 15/12/1997 | 17/08/2000 | Dissolved |
| Kleenair Maintenance Services Ltd | 01392894 | 12/10/1991 | 30/06/2003 | Dissolved |
| Kleenair Marketing Ltd | 02250444 | 12/10/1991 | 30/06/2003 | Dissolved |
| Kleenair Rentals Ltd | 02247316 | 12/10/1991 | 30/06/2003 | Dissolved |
| Max Control Systems Ltd | 03024363 | 04/03/1999 | 17/08/2000 | Dissolved |
| ROCKWELL AUTOMATION LIMITED | 00872110 | 23/12/1997 | 17/08/2000 | Silver |
| Transmitton Ltd | 02924545 | 15/12/1997 | 17/08/2000 | Dissolved |
| Tritrax Investments Ltd | 02295735 | 15/12/1997 | 17/08/2000 | Dissolved |
| Trusted Engineering Ltd | 00914248 | 15/12/1997 | 17/08/2000 | Dissolved |
| V G Instruments Plc | 01772847 | 27/03/1992 | 27/03/1993 | Dissolved |
| Wygiwyg Ltd | 01891030 | 11/06/1992 | 19/11/1993 | Dissolved |