| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ABELL MEDIATECH LIMITED | 08617473 | 19/07/2013 | Dissolved |
| Blm Media Ltd | 03978533 | 20/04/2000 | Dissolved |
| Blm Sports Marketing Ltd | 03900940 | 30/12/1999 | Dissolved |
| Colmed Ltd | 05685801 | 10/01/2008 | Dissolved |
| Digital Management Technologies Ltd | 04180484 | 11/11/2003 | Dissolved |
| Eurolab Media Services Ltd | 03207601 | 01/11/1997 | Dissolved |
| Flint Creative Solutions Ltd | 04103134 | 07/11/2000 | Dissolved |
| Quantum Digital Services Ltd | 03647072 | 26/10/1998 | Dissolved |
| Quantum Media Services Ltd | 03651183 | 26/10/1998 | Dissolved |
| Quantum on-Line Ltd | 03649032 | 26/10/1998 | Dissolved |
| REALWORLD ADVERTISING LIMITED | 09447960 | 07/05/2021 | One Red Flag |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ARENA MEDIA HOLDINGS LIMITED | 02954661 | 11/08/1994 | 01/07/2013 | One Red Flag |
| ARENA MEDIA LIMITED | 02535107 | 28/08/1992 | 01/07/2013 | Gold |
| BLM CLILVERD LIMITED | 02939392 | 01/09/1994 | 01/07/2013 | Gold |
| BLM MEDIA LIMITED | 02958460 | 05/01/2006 | 01/07/2013 | Strike Off |
| BLM TWO LIMITED | 05587612 | 10/10/2005 | 01/07/2013 | Dissolved |
| Colmed Ltd | 05685801 | 24/01/2006 | 30/04/2007 | Dissolved |
| HAVAS BUSINESS LIMITED | 03648642 | 26/10/1998 | 01/07/2013 | Not Trading |
| HAVAS LABS LIMITED | 03900949 | 30/12/1999 | 01/07/2013 | Not Trading |
| LOCAL PLANET INTERNATIONAL LIMITED | 05982460 | 31/10/2006 | 01/02/2007 | One Red Flag |
| Mercure Ltd | 03648244 | 26/10/1998 | 30/03/2006 | Dissolved |
| THE INSTITUTE OF PRACTITIONERS IN ADVERTISING (PRE-CHARTER) | 00221167 | 21/03/2013 | 05/12/2013 | Dissolved |
| THE KITE FACTORY GROUP LIMITED | 04303229 | 01/01/2014 | 22/10/2019 | Bronze |
| THE KITE FACTORY LIMITED | 08928839 | 01/04/2014 | 22/10/2019 | Silver |
| WHCO3 LIMITED | 10710964 | 08/07/2017 | 22/10/2019 | Amber |
| WORK RESEARCH LIMITED | 05680050 | 25/02/2013 | 01/07/2013 | Dissolved |