| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ALTON BUILDING PRESERVATION TRUST | 02722749 | 04/08/2005 | Gold |
| ALTON BUILDING PRESERVATION TRUST | 02722749 | 09/06/2003 | Gold |
| Brightproud Limited | 02586989 | 05/04/1991 | Dissolved |
| Britannia - Unicorn Ltd | 02090132 | 10/08/1991 | Dissolved |
| ENERGY ALTON C.I.C. | 07886523 | 28/04/2022 | Gold |
| Efx Communications Ltd | 02911279 | 14/06/1994 | Dissolved |
| M&r 584 Limited | 02870967 | 25/11/1993 | Dissolved |
| NORMANDY DEVELOPMENTS LIMITED | 02032516 | 05/10/1992 | Bronze |
| SUSTAINABLE BUILDING PRODUCTS LTD | 03945848 | 13/03/2000 | Dissolved |
| THEDDEN GRANGE RESIDENTS ASSOCIATION LIMITED | 01228323 | 23/10/1991 | Gold |
| WESTBROOKE HOUSE MANAGEMENT CO LIMITED | 09438602 | 02/08/2024 | Not Trading |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ALTON BUILDING PRESERVATION TRUST | 02722749 | 22/01/1996 | 18/12/2000 | Gold |
| Albion Design of Cambridge Ltd | 01954168 | 28/06/1993 | 23/12/1996 | Dissolved |
| Albion Design of London Ltd | 02819799 | 07/06/1993 | 23/12/1996 | Dissolved |
| B A METALWORK LIMITED | 01655393 | 06/08/1991 | 17/07/2012 | Dissolved |
| Brightproud Limited | 02586989 | 05/04/1991 | 07/05/1991 | Dissolved |
| EARTHWORKS FOUNDATION LIMITED | 03815594 | 08/12/2000 | 18/06/2020 | Amber |
| EARTHWORKS TRUST LIMITED | 03011755 | 07/01/2000 | 01/04/2019 | Silver |
| THE FARNHAM POTTERY TRUST LIMITED | 06546703 | 07/04/2009 | 01/03/2014 | Gold |
| THE FARNHAM POTTERY TRUST LIMITED | 06546703 | 27/03/2008 | 02/12/2018 | Gold |