| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| 4D MONITORING LIMITED | 09839120 | 01/08/2022 | Silver |
| CAMBRIDGE CORPORATE PROPERTIES II LIMITED | 13588162 | 26/08/2021 | Silver |
| CAMBRIDGE CORPORATE PROPERTIES LTD | 10557326 | 11/01/2017 | Silver |
| GILES LANDSCAPES AND MANAGEMENT LTD | 09084044 | 28/02/2023 | Silver |
| IT SHOULD BE FUN LIMITED | 09749080 | 07/11/2021 | One Red Flag |
| SI AVIATION SERVICES LIMITED | 10940003 | 31/08/2017 | One Red Flag |
| SI1 SERVICES LTD | 10762517 | 10/05/2017 | Gold |
| TE 566 LIMITED | 12799130 | 07/08/2020 | Amber |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| 4D MONITORING LIMITED | 09839120 | 23/10/2015 | 30/06/2020 | Silver |
| AIR2HIRE LIMITED | 03198759 | 19/03/2004 | 31/12/2009 | Bronze |
| AIR2HIRE LIMITED | 03198759 | 14/05/1996 | 31/12/2009 | Bronze |
| CAMBRIDGE MAINTENANCE SERVICES LIMITED | 03054414 | 09/05/1995 | 02/12/2020 | Gold |
| CUAVA LTD | 10522281 | 13/12/2016 | 11/12/2017 | Dissolved |
| ELOGBOOKS FACILITIES MANAGEMENT LIMITED | 07259147 | 19/05/2010 | 30/06/2020 | Silver |
| ELOGBOOKS FACILITIES SERVICES LTD | 11560925 | 10/09/2018 | 30/06/2020 | Bronze |
| GILES LANDSCAPES AND MANAGEMENT LTD | 09084044 | 12/06/2014 | 26/05/2015 | Silver |