| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Asystum Ltd | 03027825 | 23/02/1995 | Dissolved |
| ENERTECGREEN LIMITED | 09343711 | 05/12/2014 | Amber |
| EVECTRA LIMITED | 08164138 | 01/08/2012 | Bronze |
| K S I (Europe) Ltd | 02244053 | 06/06/1992 | Dissolved |
| ONE3NINE VENTURES LIMITED | 07452175 | 09/12/2010 | Amber |
| Optimis Ltd | 01402387 | 09/02/1992 | Dissolved |
| S Q L Systems Europe Ltd | 03012118 | 16/01/1995 | Dissolved |
| S Q L Systems Ltd | 03012116 | 16/01/1995 | Dissolved |
| ZEROPOINT CLEAN TECH LIMITED | 05976310 | 24/10/2006 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Computerised Industrial Technology Ltd | 02162220 | 18/05/1991 | 31/10/1994 | Dissolved |
| Convergent Europe Ltd | 02842825 | 07/02/2000 | 02/11/2001 | Dissolved |
| HITACHI ENERGY UK LIMITED | 02985756 | 01/11/1999 | 09/11/1999 | Silver |
| HITACHI ENERGY UK LIMITED | 02985756 | 29/10/1994 | 07/08/2000 | Silver |
| SAAS VENTURES LIMITED | 10245350 | 22/06/2016 | 03/10/2016 | Gold |