| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| AMYGDALA26 LIMITED | 09876713 | 17/11/2015 | Dissolved |
| AMYGDALA42 LIMITED | 09715934 | 04/08/2015 | Dissolved |
| CONNECTED TOGETHER CIC | 08496240 | 19/04/2013 | Silver |
| Casella,C F,& Co Ltd | 01379647 | 02/09/1996 | Dissolved |
| Cuprule Ltd | 03277108 | 06/10/1998 | Dissolved |
| Cuprule Ltd | 03277108 | 06/10/1998 | Dissolved |
| FIRST FOR ENGAGEMENT LIMITED | 15655248 | 17/04/2024 | Amber |
| Golden Soverign Hotels Ltd | 01640973 | 02/09/1996 | Dissolved |
| Greater Manchester Scientific Services Ltd | 02951841 | 19/09/1997 | Dissolved |
| Greater Manchester Scientific Services Ltd | 02951841 | 19/09/1997 | Dissolved |
| IEG TECHNOLOGIES UK LIMITED | 05419864 | 12/04/2005 | Dissolved |
| Society for The Environment | 04665882 | 03/07/2003 | Dissolved |
| The Air Quality Centre Ltd | 03113013 | 19/09/1997 | Dissolved |
| The Air Quality Centre Ltd | 03113013 | 19/09/1997 | Dissolved |
| William Pope Ltd | 05493937 | 28/06/2005 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AAR ENVIRONMENTAL LTD | 01649481 | 21/12/2005 | 04/03/2010 | Dissolved |
| BUREAU VERITAS B&I LIMITED | 04156529 | 09/05/2001 | 16/03/2004 | Dissolved |
| BUREAU VERITAS HS&E LIMITED | 02495300 | 26/05/2000 | 16/03/2004 | Strike Off |
| CASELLA ANALYTIC | 02823669 | 19/09/1997 | 24/05/2000 | Dissolved |
| CASELLA ANALYTIC | 02823669 | 19/09/1997 | 16/03/2004 | Dissolved |
| CASELLA MONITOR LIMITED | 02720870 | 23/03/2002 | 16/03/2004 | Dissolved |
| CASELLA SCIENCE AND ENVIRONMENT LIMITED | 00106869 | 02/09/1996 | 04/09/2000 | Dissolved |
| CASELLA SCIENCE AND ENVIRONMENT LIMITED | 00106869 | 15/12/1995 | 16/03/2004 | Dissolved |
| DARWIN HIRE LIMITED | 03727137 | 26/03/1999 | 01/04/2003 | Dissolved |
| DARWIN HIRE LIMITED | 03727137 | 26/03/1999 | 16/03/2004 | Dissolved |
| Dyer,Dr Bernard,& Partners (1948) Ltd | 00462824 | 27/06/1995 | 07/08/1998 | Dissolved |
| E-Labs Environmental Ltd | 05646150 | 06/12/2005 | 01/03/2007 | Dissolved |
| FAMILY PSYCHOLOGY MUTUAL CIC | 09763924 | 01/01/2019 | 09/11/2020 | Silver |
| IDEAL INDUSTRIES LIMITED | 01824671 | 02/09/1996 | 04/09/2000 | Amber |
| IDEAL INDUSTRIES LIMITED | 01824671 | 13/09/1995 | 16/03/2004 | Amber |
| INSTITUTION OF ENVIRONMENTAL SCIENCES LIMITED (THE) | 01053508 | 16/03/2004 | 24/03/2009 | Silver |
| INSTITUTION OF ENVIRONMENTAL SCIENCES LIMITED (THE) | 01053508 | 08/03/2005 | 28/04/2016 | Silver |
| MICROBIAL SOLUTIONS LIMITED | 05643048 | 30/11/2007 | 30/04/2015 | Dissolved |
| MONITOR (EUROPE) LIMITED | 03755743 | 23/03/2002 | 16/03/2004 | Dissolved |
| MOULD GROWTH CONSULTANTS LIMITED | 00884771 | 13/12/2000 | 17/06/2002 | Gold |
| SUPPORTINGU LTD | 05065589 | 18/04/2013 | 29/10/2014 | Dissolved |
| TCGL REALISATIONS NO. 1 LIMITED | 04176995 | 25/09/2001 | 16/03/2004 | Dissolved |
| THE CENTRE FOR INTEGRATED PHOTONICS LIMITED | 04905488 | 03/02/2009 | 29/03/2010 | Dissolved |
| TRILOGY ACTIVE LTD | 07555631 | 20/04/2011 | 28/11/2023 | Silver |
| The Casella Group Ltd | 02727472 | 20/03/1997 | 13/02/2004 | Dissolved |
| Trialreason Services Ltd | 02837761 | 27/06/1995 | 16/07/1998 | Dissolved |
| UNIVERSITY OF SUFFOLK LTD | 05078498 | 30/01/2014 | 31/07/2021 | Bronze |
| WINTON ENVIRONMENTAL MANAGEMENT LIMITED | 00782635 | 13/12/2000 | 16/03/2004 | Dissolved |
| WINTON HOLDINGS LIMITED | 01907547 | 13/12/2000 | 16/03/2004 | Dissolved |