| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| B.N.F. METALS TECHNOLOGY CENTRE | 00163067 | 12/09/1991 | Dissolved |
| Hallcarmel Ltd | 03691771 | 05/01/1999 | Dissolved |
| NORTHERN ENGINEERING CENTRE | 02424832 | 18/04/1995 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Cdt Access Ltd | 03168926 | 06/11/1996 | 30/11/1998 | Dissolved |
| County Durham Educational Trust | 03294466 | 18/06/1999 | 16/09/1999 | Dissolved |
| County Durham T E C | 02463255 | 21/06/1993 | 30/11/1998 | Dissolved |
| County Durham Tec Enterprise Ltd | 03139826 | 05/01/1996 | 30/11/1998 | Dissolved |
| DARLINGTON CVS | 05477024 | 27/04/2006 | 17/07/2012 | Dissolved |
| DARLINGTON MIND | 04433988 | 19/09/2006 | 13/09/2011 | Silver |
| DURHAM AGENCY AGAINST CRIME LIMITED | 02622660 | 28/09/1994 | 30/11/1998 | Silver |
| LONGFIELD ACADEMY TRUST | 07700556 | 06/12/2012 | 31/12/2014 | Dissolved |
| METHODIST HOMES | 04043124 | 09/06/2011 | 24/07/2012 | Silver |
| MHA AUCHLOCHAN | SC352117 | 27/11/2014 | 05/09/2019 | Insolvent |
| MHA CARE GROUP | 04038631 | 23/01/2007 | 20/10/2011 | Dissolved |
| Northern Informatics Applications Agency Ltd | 02988715 | 24/07/1997 | 30/11/1998 | Dissolved |
| OUTOKUMPU HOLDINGS UK LIMITED | 02461836 | 13/01/1992 | 11/01/1993 | Dissolved |
| ST.JOHN'S COLLEGE,DURHAM | 00113496 | 01/03/2002 | 12/12/2008 | Silver |
| THE TEC NATIONAL PENSION SCHEME SPONSORING COMPANY LIMITED | 02855263 | 21/09/1993 | 25/11/1998 | Dissolved |
| Techsperience Challenge Ltd | 03201876 | 17/09/1996 | 15/07/1997 | Dissolved |
| Walsall Training & Enterprise Council | 02521019 | 11/07/1991 | 10/12/1992 | Dissolved |
| YOUNG ENTERPRISE | 00712260 | 30/11/1995 | 25/11/1999 | Silver |