| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| NEW STS LIMITED | 07904912 | 10/01/2012 | Dissolved |
| POUND HOUSE MANAGEMENT SOLUTIONS LIMITED | 04849408 | 29/07/2003 | Dissolved |
| SOUTHSIDE THERMAL SCIENCES (STS) LIMITED | 04393613 | 02/07/2004 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CLDN PORTS HUMBER LIMITED | 00052665 | 01/09/1993 | 20/03/2002 | Silver |
| CLDN PORTS KILLINGHOLME LIMITED | 00278815 | 22/12/1999 | 11/04/2002 | Silver |
| CRANFIELD AEROSPACE SOLUTIONS LIMITED | 02415720 | 04/08/2003 | 30/04/2010 | Amber |
| EXOLUM RIVERSIDE LTD | 03422427 | 25/08/1999 | 11/04/2002 | Silver |
| EXOLUM TERMINALS LTD | 03795352 | 01/01/2000 | 11/04/2002 | Gold |
| FUGRO ROBERTSON HOLDINGS LIMITED | 03120332 | 26/03/1996 | 26/07/2001 | Dissolved |
| MARCONI (TWENTY-TWO) LIMITED | 00703314 | 24/04/1992 | 22/10/1992 | Dissolved |
| MICROCHIP TECHNOLOGY CALDICOT LIMITED | 00705031 | 10/07/1991 | 31/08/1993 | Bronze |
| Optical Equipment Ltd | 01717094 | 10/08/1991 | 31/08/1993 | Dissolved |
| RAVEN MOUNT SERVICES COMPANY LIMITED | 00055973 | 13/07/1994 | 14/05/2003 | Gold |
| SAMSKIP MULTIMODAL CONTAINER LOGISTICS LIMITED | 00860767 | 03/10/2001 | 11/04/2002 | Dissolved |
| SEAWHEEL HOLDINGS LIMITED | 03146566 | 07/12/1998 | 11/04/2002 | Dissolved |
| SENSOR COATING SYSTEMS LIMITED | 07927218 | 27/01/2012 | 26/07/2023 | Gold |
| SIMON ENGINEERING LIMITED | 00287790 | 17/12/1993 | 11/04/2002 | Not Trading |
| SWAN HILL SHARE SCHEME TRUSTEES LIMITED | 02778285 | 13/07/1994 | 14/05/2003 | Gold |
| Simon Engineering (Finance) Ltd | 00042286 | 27/10/1999 | 11/04/2002 | Dissolved |
| TELENT LIMITED | 00067307 | 21/09/1991 | 21/09/1993 | Silver |