| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Aurora Ip Ltd | 05766542 | 03/04/2006 | Dissolved |
| Bruce Investments Ltd | 01622928 | 14/09/1992 | Dissolved |
| Downex Investments Ltd | 03055650 | 07/09/1995 | Dissolved |
| INDUSTRIAL TECHNOLOGY SECURITIES LIMITED | 04622962 | 02/01/2003 | Dissolved |
| Industrial Technology Securities Ltd | 01792376 | 05/07/1991 | Dissolved |
| Smith Associates Research & Development Ltd | 01416520 | 14/09/1992 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AIRTO LIMITED | 01217006 | 20/12/1993 | 01/12/1998 | Silver |
| BAE SYSTEMS APPLIED INTELLIGENCE LIMITED | 01337451 | 15/09/1992 | 11/06/1997 | Silver |
| BMT GROUP LIMITED | 01887373 | 09/07/1996 | 30/03/1999 | Silver |
| BROADCOM INNOVISION LIMITED | 03024348 | 01/07/2001 | 30/12/2004 | Dissolved |
| ELEMENT HUMAN GROUP LIMITED | 08622361 | 06/05/2015 | 26/01/2016 | One Red Flag |
| ESYS LIMITED | 02445975 | 16/08/1999 | 01/07/2001 | Dissolved |
| FOUNDATION FOR SCIENCE AND TECHNOLOGY | 01327814 | 01/04/1994 | 22/03/2001 | Dissolved |
| IMAGINEER CONSULTING LIMITED | 04612174 | 08/09/2006 | 08/01/2015 | Dissolved |
| IMAGINEER SYSTEMS LTD | 04451325 | 22/08/2002 | 08/01/2015 | Silver |
| IP GROUP PLC | 04204490 | 11/09/2002 | 24/03/2015 | Silver |
| IP2IPO LIMITED | 04072979 | 16/10/2003 | 05/03/2007 | Bronze |
| Idetica Ltd | 02666237 | 27/11/1992 | 23/11/1997 | Dissolved |
| MDA SPACE AND ROBOTICS LIMITED | 05495455 | 22/03/2006 | 06/07/2009 | One Red Flag |
| MIRRIAD LIMITED | 05879899 | 10/02/2007 | 25/09/2007 | Dissolved |
| NATIONAL SPACE CENTRE | 03485236 | 22/12/1997 | 29/04/2005 | Silver |
| OREGAN NETWORKS LIMITED | 03386529 | 21/09/2011 | 22/05/2017 | Bronze |
| PAPERCOURT SAILING CLUB LIMITED | 01458210 | 07/12/1991 | 09/02/1995 | Silver |
| SMITH INSTITUTE | 03341743 | 24/03/1997 | 01/05/2018 | Bronze |
| SMITH INSTITUTE | 03341743 | 24/03/1997 | 01/05/2018 | Bronze |
| SOCIETY OF BRITISH AEROSPACE COMPANIES (THE) | 00143447 | 13/07/1992 | 29/06/1994 | Dissolved |
| SOUTHAMPTON ASSET MANAGEMENT LIMITED | 04367489 | 10/05/2002 | 16/09/2003 | Silver |
| SOUTHAMPTON INNOVATIONS LIMITED | 02595189 | 11/02/1998 | 16/09/2003 | Dissolved |
| UNIVERSITY OF SOUTHAMPTON HOLDINGS LIMITED | 02331936 | 01/10/2001 | 19/06/2006 | Silver |
| ZAC TOONS LIMITED | 05469893 | 26/09/2006 | 06/12/2008 | Dissolved |