| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ADMINTIQUE LIMITED | 02367151 | 31/03/1992 | Dissolved |
| BORN 2 LEARN.COM LIMITED | 03841383 | 22/12/1999 | Dissolved |
| CRYSTAL CLARITY CONSULTING LIMITED | 08208791 | 10/09/2012 | Dissolved |
| J & J Floorings (Watford) Ltd | 01229026 | 31/08/2002 | Dissolved |
| Kolectric Ltd | 00428698 | 08/04/1997 | Dissolved |
| QUATERMASS RESEARCH LTD | 03893241 | 18/06/2001 | Dissolved |
| Smarteam Ltd | 03553322 | 01/05/1998 | Dissolved |
| System Dynamics Ltd | 01331603 | 28/02/1991 | Dissolved |
| WATFORD FOOTBALL CLUB DEVELOPMENT FUND LIMITED | 01633391 | 17/06/1991 | Dissolved |
| WEB2CAD LTD | 03944966 | 10/03/2000 | Dissolved |
| WESTERMERE LIMITED | 03359883 | 23/06/1997 | Dissolved |
| Watford Events Ltd | 03001671 | 22/12/1994 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AAREN TECHNOLOGY LIMITED | 05858435 | 27/06/2006 | 26/07/2018 | Silver |
| ADMIRAL MICROWAVES LIMITED | 02697531 | 12/09/2006 | 26/07/2018 | Silver |
| ALBAN WALKER LIMITED | 03001888 | 29/01/2013 | 30/04/2014 | Dissolved |
| ASPEN ELECTRONICS LIMITED | 01166826 | 01/07/1997 | 26/07/2018 | Silver |
| BANG MEDIA INTERNATIONAL LIMITED | 07111143 | 04/04/2012 | 06/07/2015 | Bronze |
| Business Development Practice Ltd | 03810688 | 21/07/1999 | 24/01/2001 | Dissolved |
| DIGITAL PROSPECTS 360 LIMITED | 06332040 | 31/01/2012 | 03/12/2014 | Silver |
| FAIRBROTHER ELECTRICAL LIMITED | 04954563 | 06/11/2007 | 13/05/2010 | Dissolved |
| Flexible Study Consortium Ltd | 03090064 | 15/05/1996 | 06/02/1997 | Dissolved |
| GORAN PLASTICS LIMITED | 03651053 | 04/01/2005 | 15/02/2014 | Dissolved |
| Leasametric Ltd | 06576623 | 26/02/2009 | 30/06/2010 | Dissolved |
| MARINE FLOORING SYSTEMS INTERNATIONAL LIMITED | 03790946 | 13/07/2006 | 02/09/2014 | Dissolved |
| MINIBUS EXECUTIVE TRAVEL LIMITED | 04181904 | 03/04/2014 | 01/07/2015 | Silver |
| Model Distribution Ltd | 03117298 | 31/12/1997 | 29/03/2000 | Dissolved |
| OPTIONS MAIL ORDER SOFTWARE LIMITED | 03241268 | 22/08/1997 | 07/01/2000 | Bronze |
| OUT & OUT ANSWERS LIMITED | 05148265 | 02/02/2007 | 31/12/2008 | Dissolved |
| P T F I Ltd | 03106170 | 11/04/1997 | 22/01/1999 | Dissolved |
| PMCD SPORTS MEDIA LIMITED | 07957581 | 21/02/2012 | 03/10/2017 | Silver |
| R.C. WARREN PACKERS LIMITED | 01751747 | 22/02/2012 | 21/12/2017 | Silver |
| RAYTRAK LIMITED | 03133241 | 24/08/2009 | 14/12/2015 | Gold |
| RUSSELL SQUARE HOUSE NO.6 LIMITED | 01119811 | 15/09/1991 | 17/03/1997 | Dissolved |
| SMARTEDGE MANUFACTURING LIMITED | 05436499 | 26/04/2005 | 06/03/2015 | Dissolved |
| ST ALBANS DISTRICT CHAMBER OF COMMERCE | 03898146 | 26/01/2001 | 31/12/2006 | Silver |
| STOCKDALE MARTIN LTD | 04421340 | 17/11/2011 | 19/09/2019 | Gold |
| Solidworks Ltd | 03139689 | 01/12/1996 | 22/12/2000 | Dissolved |
| TARRAGON SOLUTIONS LIMITED | 03433723 | 17/11/2011 | 31/12/2017 | Gold |
| TEKUCHI LTD | 03736988 | 08/02/2013 | 19/05/2015 | One Red Flag |
| THOMAS COX & CO LIMITED | 08722010 | 07/10/2013 | 08/10/2013 | Dissolved |
| TRYHOLD LIMITED | 03477703 | 10/12/1997 | 09/04/2002 | Bronze |
| The Classic Car Club (South) Ltd. | 04661723 | 04/03/2003 | 29/12/2004 | Dissolved |
| The Hertfordshire Training & Enterprise Council | 02427517 | 21/07/1995 | 28/05/1997 | Dissolved |
| WEALTH MATTERS LIMITED | 03862593 | 13/08/2002 | 31/03/2004 | Silver |
| WILLIAMS OF SOLVA LIMITED | 04066587 | 06/09/2000 | 17/02/2005 | Bronze |