| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Iipsm Ltd | 05682811 | 16/08/2006 | Dissolved |
| Project Radian Limited | 02565227 | 04/12/1992 | Dissolved |
| RADIAN ACOUSTICS LIMITED | 03035730 | 21/03/1995 | Dissolved |
| RADIAN MANAGEMENT LIMITED | 04628134 | 03/01/2003 | Dissolved |
| RADIAN SYSTEMS LIMITED | 01786200 | 20/08/1991 | Amber |
| RADIANSCORE LIMITED | 06325987 | 26/07/2007 | Dissolved |
| Radian Engineering Ltd | 02600385 | 26/04/1991 | Dissolved |
| Radian Systems (Scotland) Ltd | SC125337 | 31/05/1990 | Dissolved |
| THE RADIAN COMPANY LIMITED | 04629253 | 06/01/2003 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ISTRUCTE LTD | 02444141 | 01/03/1999 | 28/02/2000 | Silver |
| Mg Radian Ltd | 03223626 | 09/08/1996 | 17/10/1997 | Dissolved |
| SCAFOM-RUX UNITED KINGDOM LIMITED | 05111466 | 21/07/2004 | 01/11/2005 | One Red Flag |