| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| FORAY 677 LIMITED | 01251442 | 14/09/2007 | Gold |
| K. N. ELTON LIMITED | 01332856 | 25/11/2011 | Silver |
| LONDON & STRATEGIC ESTATES LIMITED | 01587092 | 14/09/2007 | Silver |
| MAVERBERRY LIMITED | 01437914 | 14/09/2007 | Amber |
| SAPCOTE GROUP PLC | 01732425 | 14/09/2007 | Bronze |
| SAPCOTE TRUSTEE LIMITED | 06137236 | 01/04/2013 | Silver |
| SIGNALGRANGE LIMITED | 01933207 | 14/09/2007 | Silver |
| WILLIAM SAPCOTE DEVELOPMENT LIMITED | 01604265 | 14/09/2007 | Silver |
| WILLIAM SAPCOTE LIMITED | 09299769 | 06/11/2014 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| HAWLEY LANE BUSINESS PARK MANAGEMENT COMPANY LIMITED | 07282566 | 14/06/2010 | 31/01/2014 | One Red Flag |
| MANOR HOUSE BUSINESS PARK MANAGEMENT COMPANY LIMITED | 07203434 | 12/04/2010 | 09/08/2012 | One Red Flag |
| SLOUGH BUSINESS PARK LTD | 09954673 | 15/01/2016 | 19/04/2018 | Silver |