| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Even Deal Ltd | 04697147 | 13/03/2003 | Dissolved |
| FIRESHIELD CABLE SYSTEMS LIMITED | 06973983 | 17/08/2009 | Dissolved |
| FOURFOLD PROPERTIES LIMITED | 04752278 | 15/05/2003 | Insolvent |
| Filtronic Reorganisation Ltd | 01315303 | 20/10/1991 | Dissolved |
| Fire Realisations Ltd. | 04011446 | 09/06/2000 | Dissolved |
| Fireshield Cable Systems (Holdings) Ltd | 06557371 | 07/04/2008 | Dissolved |
| Fourfold Precision Tool Co Ltd | 00404927 | 12/06/1998 | Dissolved |
| Mister Chips Thinks Fresh Ltd | 02111227 | 28/01/1999 | Dissolved |
| RIGBY SPECIALITY WIRES LIMITED | 06974043 | 17/08/2009 | Dissolved |
| Rigby Realisations Ltd. | 01392469 | 01/10/1997 | Dissolved |
| THERMAL TECHNOLOGIES LTD | 07315546 | 29/01/2015 | Gold |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| FILTRONIC WIRELESS LTD | 01360332 | 20/10/1992 | 20/06/1994 | One Red Flag |
| Filtronic Cable Communications Ltd | 03183533 | 12/04/1996 | 27/03/1997 | Dissolved |
| Filtronic Executive Share Option Trustees Ltd | 01845899 | 12/02/1992 | 27/03/1997 | Dissolved |
| Filtronic Quest Trustees Ltd | 03134295 | 05/01/1996 | 27/03/1997 | Dissolved |
| IIC TECHNOLOGIES LIMITED | 02746976 | 22/10/1992 | 05/09/1993 | Gold |
| Microecho Ltd | 02147523 | 04/12/1991 | 20/06/1994 | Dissolved |
| TELEDYNE DEFENCE LIMITED | 01659830 | 20/11/1992 | 27/03/1997 | Dissolved |