| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| APL GROUP LIMITED | 00235734 | 30/04/2015 | Bronze |
| BRANDS BANDS AND FANS LIMITED | 06981123 | 03/09/2013 | Dissolved |
| CAB (NO. 1) LIMITED | 03031120 | 09/08/2018 | Not Trading |
| COMPOSING ROOM LIMITED(THE) | 01828303 | 04/09/2013 | Dissolved |
| CREATION COMMUNICATIONS LIMITED | 05619191 | 30/11/2011 | Silver |
| CSIB (NO.1) LIMITED | 07242304 | 16/03/2012 | One Red Flag |
| DIALOGUE DLKW LIMITED | 04973749 | 03/09/2013 | Dissolved |
| ENGELS (NO.1) LIMITED | 00515994 | 12/02/2013 | Amber |
| FCB EUROPE LIMITED | 03007253 | 23/09/2014 | Gold |
| FIELDPLAN LIMITED | 00874666 | 16/03/2012 | Dissolved |
| FRUKT LIMITED | 03939373 | 03/09/2013 | Dissolved |
| FUSE LTD | 05216126 | 04/09/2013 | Dissolved |
| INTERPUBLIC LIMITED | 00867637 | 05/05/2011 | Bronze |
| IPG EUROPE LTD | 09301144 | 10/11/2014 | One Red Flag |
| IPG HOLDINGS (UK) LIMITED | 02353279 | 05/05/2011 | Silver |
| IPG PFP GENERAL PARTNER LIMITED | SC412766 | 16/03/2012 | Gold |
| IPG PFP LIMITED PARTNER LIMITED | SC412768 | 16/03/2012 | Silver |
| LES (NO.1) LIMITED | 03035203 | 11/04/2014 | Silver |
| MCCANN HEALTH LIMITED | 08743251 | 12/01/2023 | One Red Flag |
| MCCANN-ERICKSON UK GROUP LIMITED | 03640484 | 16/03/2012 | Bronze |
| SHANDWICK PUBLIC RELATIONS LIMITED | 00976567 | 16/03/2012 | Dissolved |
| VIRGO HOLDINGS LTD | 05734436 | 24/09/2013 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AMMIRATI PURIS LINTAS LIMITED | 02055679 | 19/04/2016 | 10/01/2019 | Dissolved |
| HONCHO AGENCY LIMITED | 01993918 | 17/01/2013 | 15/06/2016 | Gold |
| IPG STUDIOS UK LIMITED | 06519082 | 16/03/2012 | 27/09/2022 | Silver |
| MEDIAHUB WORLDWIDE (UK) LIMITED | 09166603 | 11/04/2019 | 07/06/2023 | Gold |
| VIRGO HEALTH PR LIMITED | 03889969 | 27/09/2013 | 27/06/2022 | Insolvent |