| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CAMBRIDGE ASSESSMENT OVERSEAS LIMITED | 06265255 | 01/08/2021 | One Red Flag |
| CAMBRIDGE UNIVERSITY PRESS (HOLDINGS) LIMITED | 04606950 | 25/07/2012 | Gold |
| IVYARCH LIMITED | 01424930 | 18/04/1998 | Gold |
| IVYARCH LIMITED | 01424930 | 11/10/1991 | Gold |
| OXFORD AND CAMBRIDGE INTERNATIONAL ASSESSMENT SERVICES LIMITED | 01838486 | 01/08/2021 | One Red Flag |
| OXFORD CAMBRIDGE AND RSA EXAMINATIONS | 03484466 | 26/09/2017 | Gold |
| Sabre Trust Trading Company Limited | 02685492 | 04/02/1992 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ARTICLE 19 | 02097222 | 10/05/2001 | 23/06/2005 | Silver |
| BBC NEWS LIMITED | 04080424 | 28/09/2000 | 10/03/2006 | Not Trading |
| BBC STUDIOS LIMITED | 04463546 | 21/06/2005 | 18/07/2005 | Gold |
| ONCOWEB LIMITED | 03205128 | 25/07/2012 | 21/10/2022 | Silver |
| PARLIAMENTARY BROADCASTING UNIT LIMITED | 02402768 | 20/01/1998 | 23/01/2006 | Dissolved |
| RED BEE MEDIA LIMITED | 04257461 | 16/02/2005 | 31/07/2005 | Bronze |
| THE NUFFIELD TRUST FOR RESEARCH AND POLICY STUDIES IN HEALTH SERVICES | 00382452 | 12/05/2008 | 31/12/2014 | Silver |
| THE PUBLISHERS ASSOCIATION LIMITED | 03282879 | 13/05/2015 | 08/05/2024 | Bronze |