| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| MARKWICK CONSULTING LIMITED | 12037891 | 07/06/2019 | Silver |
| THE INSTITUTE OF PRACTITIONERS IN ADVERTISING (PRE-CHARTER) | 00221167 | 17/03/2016 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ART COMPANY (CREATIVE SERVICES) LIMITED(THE) | 01931739 | 01/02/2008 | 08/11/2012 | Dissolved |
| BEAUMONT-BENNETT LIMITED | 02186817 | 01/02/2008 | 08/11/2012 | Dissolved |
| CREATIVE INDUSTRIES FEDERATION | 08793599 | 01/01/2016 | 01/07/2022 | One Red Flag |
| CREATIVE STRATEGY LIMITED | 02282899 | 01/02/2008 | 08/11/2012 | Dissolved |
| EUROCLEARING LIMITED | 02548770 | 01/02/2008 | 08/11/2012 | Dissolved |
| G2 DATA DYNAMICS LIMITED | 03811127 | 01/02/2008 | 28/08/2009 | Dissolved |
| G2 INTERACTIVE LIMITED | 02749663 | 01/02/2008 | 02/11/2009 | Dissolved |
| G2 LONDON LIMITED | 01448846 | 01/02/2008 | 28/08/2009 | Not Trading |
| GEOMETRY GLOBAL LIMITED | 02363911 | 01/02/2008 | 28/08/2009 | One Red Flag |
| GHG ACCESS LIMITED | 01253995 | 01/02/2008 | 02/06/2009 | Dissolved |
| GREY ADVERTISING LIMITED | 00539916 | 01/02/2008 | 14/05/2012 | Gold |
| GREY COMMUNICATIONS GROUP LIMITED | 01795794 | 01/02/2008 | 08/11/2012 | Gold |
| GREY DIRECT LIMITED | 01908998 | 01/02/2008 | 08/11/2012 | Dissolved |
| GREY ENTERTAINMENT AND MEDIA LIMITED | 02520420 | 01/02/2008 | 08/11/2012 | Dissolved |
| GREY EUROPE LIMITED | 02093893 | 01/02/2008 | 08/11/2012 | Dissolved |
| GREY GB LIMITED | 02475406 | 01/02/2008 | 08/11/2012 | Dissolved |
| GREY GLOBAL GROUP (UK) LIMITED | 03664479 | 01/02/2008 | 08/11/2012 | Silver |
| GREY GROUP SERVICES LIMITED | 01819631 | 01/02/2008 | 08/11/2012 | Dissolved |
| GREY HEALTHCARE LONDON LIMITED | 02058138 | 01/02/2008 | 02/06/2009 | Dissolved |
| GREY INTERACTIVE EUROPE LIMITED | 03837121 | 01/02/2008 | 08/11/2012 | Dissolved |
| GREY LIMITED | 04125873 | 01/02/2008 | 08/11/2012 | Dissolved |
| GREY LONDON LIMITED | 02499268 | 01/02/2008 | 08/11/2012 | Dissolved |
| GREY MIDLANDS LIMITED | 02499827 | 01/02/2008 | 08/11/2012 | Dissolved |
| GREY NETWORK LIMITED | 02126910 | 01/02/2008 | 08/11/2012 | Dissolved |
| GREY NORTH LIMITED | 01819542 | 01/02/2008 | 08/11/2012 | Dissolved |
| GREY NT LIMITED | 02098789 | 01/02/2008 | 08/11/2012 | Dissolved |
| GREY PTK ADVERTISING LIMITED | 01259894 | 01/02/2008 | 08/11/2012 | Dissolved |
| GREY TECHNOLOGY SERVICES LIMITED | 00856829 | 01/02/2008 | 08/11/2012 | Dissolved |
| GREY WORLDWIDE LIMITED | 00932147 | 01/02/2008 | 08/11/2012 | Dissolved |
| GREYCOM LIMITED | 01864844 | 01/02/2008 | 08/11/2012 | Dissolved |
| HILTON ADVERTISING LIMITED | 00756971 | 01/02/2008 | 08/11/2012 | Dissolved |
| MELLORS REAY & PARTNERS LIMITED | 02548639 | 01/02/2008 | 08/11/2012 | Dissolved |
| MIND OVER MEDIA LIMITED | 02300912 | 01/02/2008 | 08/11/2012 | Dissolved |
| MODULE COMMUNICATIONS GROUP LIMITED | 02252717 | 01/02/2008 | 08/11/2012 | Dissolved |
| MOONRAID LIMITED | 00702897 | 01/02/2008 | 08/11/2012 | Dissolved |
| PHASE V COMMUNICATIONS LIMITED | 03312245 | 03/03/2008 | 02/06/2009 | Dissolved |
| RWG LIMITED | 00722208 | 01/02/2008 | 08/11/2012 | Dissolved |
| TELEBINGO LIMITED | 02104534 | 01/02/2008 | 08/11/2012 | Dissolved |
| THE BRAND FUTURES CONSULTANCY LIMITED | 02111818 | 01/02/2008 | 08/11/2012 | Dissolved |
| TWW GROUP LIMITED | 02481989 | 01/02/2008 | 08/11/2012 | Amber |
| WILDFIRE WORD OF MOUTH LIMITED | 04571593 | 01/08/2008 | 06/07/2015 | Dissolved |