| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ADVANCED LED'S LIMITED | 04229742 | 23/04/2013 | Dissolved |
| QUENSUS LIMITED | 09530781 | 31/12/2016 | Silver |
| STRELLEY SYSTEMS LTD. | 03586525 | 22/07/1998 | Amber |
| TPBA PROPERTY DEVELOPMENT LLP | OC420271 | 20/12/2017 | Dissolved |
| TPBA WD2 LLP | OC422476 | 18/07/2018 | Dissolved |
| TPBA WW LLP | OC422477 | 28/02/2020 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| 360 SCHEDULING LIMITED | 04381562 | 01/12/2004 | 01/10/2010 | Dissolved |
| BLUE 8 SYSTEMS LIMITED | 01273597 | 28/04/1992 | 20/05/1999 | Dissolved |
| BLUE 8 TECHNOLOGIES (UK) LIMITED | 01447567 | 14/05/1992 | 20/05/1999 | Dissolved |
| BODITRAX TECHNOLOGIES LTD | 07888768 | 12/10/2012 | 12/12/2014 | Amber |
| BRITE-SPARKS ENGINEERING LTD | 04005533 | 13/07/2000 | 31/03/2016 | Dissolved |
| BRITE-SPARKS SUPPORT SERVICES LTD | 07563792 | 15/03/2011 | 31/07/2011 | Dissolved |
| Dealstrand Ltd | 01448419 | 14/05/1992 | 20/05/1999 | Dissolved |
| INTELLIGENT DECISIONING LTD | 03334833 | 01/08/2009 | 31/05/2016 | Bronze |
| KONTROLLA LIMITED | 04245268 | 20/02/2003 | 31/12/2009 | One Red Flag |
| Logan (Computer Aided Manufacturing) Ltd | 01323239 | 31/12/1991 | 20/05/1999 | Dissolved |
| NAFEMS | SC127648 | 02/10/1990 | 24/02/1994 | Amber |
| Nafems Q A Ltd | SC139006 | 11/12/1992 | 24/02/1994 | Dissolved |
| Pronovus Ltd | 02331290 | 29/06/1992 | 24/08/2005 | Dissolved |
| STRELLEY SYSTEMS LTD. | 03586525 | 22/07/1998 | 01/06/2002 | Amber |