| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| INMARSAT EMPLOYEE SHARE PLAN TRUSTEES LIMITED | 03669306 | 01/01/2012 | Dissolved |
| INMARSAT LEASING LIMITED | 02487502 | 01/01/2012 | Dissolved |
| INMARSAT VENTURES PLC | 03674573 | 01/01/2012 | Silver |
| NEWWAVE BROADBAND LIMITED | 05370145 | 13/01/2012 | Dissolved |
| STRATOS GLOBAL HOLDINGS LIMITED | 04113448 | 01/01/2012 | Dissolved |
| VITRIFI LIMITED | 13150446 | 01/06/2024 | One Red Flag |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ATLAS VENTURE LLP | OC306943 | 17/02/2004 | 03/01/2005 | Dissolved |
| ATLAS VENTURE UK LIMITED | 03392237 | 30/11/2000 | 03/01/2005 | Dissolved |
| ATLAS VENTURE UK LIMITED | 03392237 | 30/11/2000 | 03/01/2005 | Dissolved |
| CRYOBATTERY ONE LIMITED | 12041852 | 28/03/2022 | 31/03/2023 | Amber |
| Catalystone Solutions (Uk) Ltd. | 04074531 | 14/09/2000 | 23/10/2000 | Dissolved |
| Catalystone Solutions (Uk) Ltd. | 04074531 | 14/09/2000 | 15/11/2000 | Dissolved |
| EUROPASAT LIMITED | 06001119 | 10/07/2008 | 26/02/2021 | Amber |
| HIGHVIEW ENTERPRISES LIMITED | 04489271 | 01/02/2022 | 31/03/2023 | Amber |
| HIGHVIEW POWER LIMITED | 12166228 | 28/03/2022 | 31/03/2023 | Not Trading |
| HVS GRIDCO LTD | 12633642 | 28/03/2022 | 31/03/2023 | Amber |
| HVS SITECO LTD | 12616131 | 28/03/2022 | 31/03/2023 | One Red Flag |
| INMARSAT (IP) COMPANY LIMITED | 03930467 | 01/01/2012 | 26/02/2021 | Dissolved |
| INMARSAT FINANCE III LIMITED | 06138307 | 01/01/2012 | 26/02/2021 | Silver |
| INMARSAT FINANCE LIMITED | 04930309 | 01/01/2012 | 26/02/2021 | Bronze |
| INMARSAT GLOBAL LIMITED | 03675885 | 01/01/2012 | 26/02/2021 | Gold |
| INMARSAT GLOBAL XPRESS LIMITED | 07341228 | 01/01/2012 | 26/02/2021 | Dissolved |
| INMARSAT GROUP HOLDINGS LIMITED | 04886072 | 06/07/2011 | 26/02/2021 | Silver |
| INMARSAT GROUP LIMITED | 04886115 | 14/06/2005 | 31/12/2005 | Bronze |
| INMARSAT HOLDINGS LIMITED | 04917504 | 01/01/2012 | 26/02/2021 | Amber |
| INMARSAT INVESTMENTS LIMITED | 04886096 | 01/01/2012 | 26/02/2021 | One Red Flag |
| INMARSAT LEASING (TWO) LIMITED | 04103914 | 01/01/2012 | 26/02/2021 | Bronze |
| INMARSAT MARITIME VENTURES LIMITED | 12584716 | 16/10/2020 | 26/02/2021 | Silver |
| INMARSAT NAVIGATION VENTURES LIMITED | 04858686 | 01/01/2012 | 26/02/2021 | Amber |
| INMARSAT NEW VENTURES LIMITED | 11476156 | 04/09/2018 | 26/02/2021 | Amber |
| INMARSAT SERVICES LIMITED | 04379050 | 01/01/2012 | 26/02/2021 | Silver |
| INMARSAT SOLUTIONS GLOBAL LIMITED | 04041428 | 01/01/2012 | 26/02/2021 | Bronze |
| INMARSAT SOLUTIONS LIMITED | 06135635 | 03/01/2012 | 26/02/2021 | One Red Flag |
| INMARSAT US INVESTMENTS LIMITED | 07100989 | 01/01/2012 | 26/02/2021 | Dissolved |
| ISAT CONNECT BIDCO LIMITED | FC037358 | 22/07/2020 | 26/02/2021 | Bronze |
| OUT-TAKE LIMITED | 04195428 | 06/04/2001 | 01/11/2004 | Amber |
| TECHUK LTD | 01200318 | 17/03/2016 | 02/05/2017 | Silver |
| Xytis Pharmaceuticals Ltd | 05116784 | 14/06/2004 | 03/01/2005 | Dissolved |
| Xytis Pharmaceuticals Ltd | 05116784 | 14/06/2004 | 03/01/2005 | Dissolved |