| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BHE INVESTMENTS LTD | 06827468 | 23/02/2009 | Silver |
| BID HUNTINGDON LTD | 05156652 | 17/06/2004 | Amber |
| C & K Switches (Export) Ltd | 01566810 | 24/08/1992 | Dissolved |
| C & K Switches (Export) Ltd | 01566810 | 01/11/1996 | Dissolved |
| CAMBRIDGE STRUCTURES DESIGN LTD | 04133761 | 23/07/2007 | Dissolved |
| CAMBRIDGE STRUCTURES HELICALS LIMITED | 03712943 | 23/07/2007 | Dissolved |
| Chatshire Limited | 01968259 | 24/08/1992 | Dissolved |
| LEMARK ELECTRONICS LIMITED | 02740162 | 17/08/1998 | Dissolved |
| LEMARK ELECTRONICS LIMITED | 02740162 | 17/08/1998 | Dissolved |
| LOTHIAN ENERGY SURVEYS LTD | 06919568 | 29/05/2009 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| C & K Holdings (Uk) Ltd | 02483938 | 24/08/1992 | 30/10/1998 | Dissolved |
| C & K Holdings (Uk) Ltd | 02483938 | 01/11/1996 | 30/10/1998 | Dissolved |
| C & K SWITCHES LIMITED | 01382327 | 24/08/1992 | 30/10/1998 | Dissolved |
| C & K SWITCHES LIMITED | 01382327 | 01/11/1996 | 31/10/1998 | Dissolved |
| Digitech Voice & Data Ltd | 04659635 | 07/02/2003 | 09/06/2009 | Dissolved |