| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BARCOLIAN AEROSPACE LTD | 10151970 | 27/04/2016 | Dissolved |
| BARCOLIAN LIMITED | 03429258 | 04/09/1997 | Dissolved |
| HIGH BEECHES MANAGEMENT COMPANY (MARLOW) LIMITED | 02355164 | 25/03/2013 | Silver |
| SHILLINGRIDGE ASSOCIATES LIMITED | 13515625 | 16/07/2021 | Gold |
| THE SKINNERS' ALMSHOUSE CHARITY | 06801953 | 04/11/2021 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AIRCONTROL TECHNOLOGIES LIMITED | 00499991 | 02/01/1992 | 14/02/1995 | Dissolved |
| AIRSCREW LIMITED | 01146014 | 02/01/1992 | 04/06/1997 | Dissolved |
| AMETEK AIRTECHNOLOGY GROUP LIMITED | 00499805 | 21/12/1990 | 14/02/1995 | Silver |
| CBRE MANAGED SERVICES LIMITED | 01799580 | 09/03/2001 | 26/09/2001 | Bronze |
| CBRE MANAGED SERVICES LIMITED | 01799580 | 14/04/1998 | 26/09/2001 | Bronze |
| CLIFFORD EDWARDS LIMITED | 00248393 | 04/02/1993 | 09/10/1995 | Dissolved |
| Freemantle Packaging Ltd | 03169531 | 08/03/1996 | 04/06/1997 | Dissolved |
| HEADWAY SOUTH BUCKS | 04983790 | 18/04/2008 | 26/04/2012 | Silver |
| MACHINERY LIMITED | 01293982 | 15/12/1993 | 04/06/1997 | Dissolved |
| Machinery Four Ltd | 00485924 | 06/01/1993 | 04/06/1997 | Dissolved |
| NORLAND ENVIRONMENTAL SERVICES LIMITED | 03920292 | 06/04/2000 | 24/09/2001 | Dissolved |
| NORLAND FACILITIES MANAGEMENT LIMITED | 03790915 | 06/04/2000 | 21/09/2001 | Dissolved |
| Thermal Control Co. Ltd | 00438231 | 04/02/1993 | 09/10/1995 | Dissolved |