| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ANCHARD ASSOCIATES LLP | OC329620 | 05/07/2007 | Bronze |
| ECO HOUSE STORE LTD | 06561811 | 10/04/2008 | Not Trading |
| ECORIGHT LTD | 13257556 | 10/03/2021 | Not Trading |
| IJP BUILDING CONSERVATION LIMITED | 03363523 | 03/12/2007 | Dissolved |
| IJP LTD | 13789624 | 08/12/2021 | Not Trading |
| Lvtta Ltd | 03050399 | 27/04/1995 | Dissolved |
| ODAM LTD | 13995463 | 22/03/2022 | Not Trading |
| OLD HOUSE STORE LIMITED | 04027193 | 03/12/2007 | Gold |
| OWLSWORTH CONSTRUCTION LTD | 06566883 | 16/04/2008 | Gold |
| OWLSWORTH HOLDINGS LTD | 12929791 | 01/11/2021 | Silver |
| OWLSWORTH IJP LTD | 04690025 | 01/01/2010 | Silver |
| OWLSWORTH LTD | 06566869 | 16/04/2008 | Bronze |
| OWLSWORTH ROOFING LTD | 06725688 | 16/10/2008 | Silver |
| Principlex Ltd | 03598863 | 15/03/1999 | Dissolved |
| QUATRA DIRECT LTD | 06561874 | 10/04/2008 | Silver |
| QUATRA PRODUCTS LTD | 06561844 | 10/04/2008 | Not Trading |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BUSINESS ASSESSOR LIMITED | 07943940 | 09/02/2012 | 31/12/2016 | Silver |
| Chartwell Developments Ltd | 01958567 | 08/05/2002 | 30/03/2007 | Dissolved |
| Chartwell Developments Ltd | 01958567 | 08/05/2002 | 30/03/2007 | Dissolved |
| Horncastle West Ltd | 00321899 | 27/04/1995 | 05/01/1999 | Dissolved |
| Horncastle West Ltd | 00321899 | 18/11/1996 | 05/01/1999 | Dissolved |
| Isis Consultancy Ltd. | 02820071 | 03/10/1993 | 31/03/1996 | Dissolved |
| JALTEK DESIGN SERVICES LIMITED | 02125286 | 04/07/1991 | 01/06/1995 | Gold |
| JALTEK DESIGN SERVICES LIMITED | 02125286 | 04/07/1991 | 01/06/1995 | Gold |
| ROBSEAL PLC | 04434945 | 09/05/2002 | 30/03/2007 | Dissolved |
| ROBSEAL PLC | 04434945 | 09/05/2002 | 30/03/2007 | Dissolved |
| ROBSEAL ROOFING LIMITED | 03896648 | 08/05/2002 | 30/03/2007 | Dissolved |
| ROBSEAL ROOFING LIMITED | 03896648 | 08/05/2002 | 30/03/2007 | Dissolved |