| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| COUNTY HALL ESTATE MANAGEMENT LIMITED | 07341826 | 28/01/2015 | Bronze |
| GENERIC SCIENCE AND TECHNOLOGIES LIMITED | 04969732 | 19/11/2003 | Gold |
| LONDON SKY GARDEN LTD | 10480894 | 16/11/2016 | Bronze |
| RIVERSIDE FACILITIES SERVICES LIMITED | 09356081 | 16/12/2014 | Dissolved |
| Robocentre Ltd | 05622064 | 14/11/2005 | Dissolved |
| TECHNO REBEL LIMITED | 06252464 | 06/09/2010 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ALL ABOUT QUALITY LIMITED | 05326843 | 11/01/2005 | 20/03/2006 | Bronze |
| CITY GARDEN SERVICES LTD | 10999716 | 06/10/2017 | 28/12/2018 | Dissolved |
| COUNTY HALL GREEN ENERGY LIMITED | 08172638 | 08/08/2012 | 09/05/2013 | Dissolved |
| COUNTY HALL SPACE LTD | 04564926 | 09/05/2019 | 20/12/2023 | Silver |
| HEART OF GOLD MUSIC STUDIOS LTD | 05512224 | 19/07/2005 | 22/11/2005 | Silver |
| HEART OF GOLD MUSIC STUDIOS LTD | 05512224 | 19/07/2005 | 20/03/2006 | Silver |
| LCH ESTATE MANAGEMENT LIMITED | 08386953 | 04/02/2013 | 12/07/2024 | Dissolved |
| ZEN ENERGY LIMITED | 07438550 | 12/11/2010 | 10/07/2024 | Dissolved |
| ZEN EUROPA ARTS LTD | 07596404 | 07/04/2011 | 18/08/2015 | Silver |