| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| HARRISON SALINSON MEDIA OUTDOOR LIMITED | 01971130 | 05/03/1998 | Dissolved |
| LAKECHART LIMITED | 02221716 | 05/03/1998 | Dissolved |
| POSTERSCOPE IN THE NORTH LIMITED | 01803074 | 01/11/2011 | Dissolved |
| Posterscope Ltd | NF003246 | 22/01/1996 | Dissolved |
| Premier Outdoor Ltd | 03524405 | 10/03/1998 | Dissolved |
| Totalpremium Ltd | 03171111 | 29/04/1996 | Dissolved |
| Totalpremium Ltd | 03171111 | 29/04/1996 | Dissolved |
| WOMEN'S EQUALITY PARTY LIMITED | 09614158 | 05/04/2019 | Gold |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ALBAN COMMUNICATIONS LIMITED | 02747924 | 18/01/2006 | 28/03/2018 | Dissolved |
| DENTSU UK LIMITED | 01939690 | 26/10/1994 | 28/03/2018 | One Red Flag |
| LIVEPOSTER LIMITED | 08011926 | 19/04/2016 | 28/03/2018 | Dissolved |
| MERIDIAN OUTDOOR ADVERTISING LIMITED | 02490232 | 09/08/1996 | 30/03/2018 | Dissolved |
| OPEN OUTDOOR LIMITED | 04610811 | 14/02/2014 | 28/03/2018 | Dissolved |
| OUTDOOR LIFE LIMITED(THE) | 01952739 | 30/04/1991 | 28/03/2018 | Dissolved |
| POSTER MANAGEMENT (N.I.) LIMITED | NI021963 | 11/01/2016 | 11/04/2018 | Silver |
| POSTERSCOPE IN THE NORTH LIMITED | 01803074 | 30/11/1991 | 10/02/2003 | Dissolved |
| POSTERSCOPE LIMITED | 01630792 | 30/04/1991 | 28/03/2018 | Dissolved |
| PSI ADVERTISING LIMITED | 03855742 | 17/10/2003 | 13/09/2012 | Dissolved |
| ROUTE RESEARCH LIMITED | 03203937 | 21/05/1996 | 15/11/2004 | Silver |
| THE INSTITUTE OF PRACTITIONERS IN ADVERTISING (PRE-CHARTER) | 00221167 | 24/04/2001 | 26/04/2006 | Dissolved |