| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Blue Square Holdings Ltd | 04142342 | 26/01/2001 | Dissolved |
| Consolidated Asset Management Ltd | 04471973 | 29/08/2002 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ARC LINE MUSIC LIMITED | 05706734 | 13/02/2006 | 15/05/2011 | Dissolved |
| ATOMICBLOCK LIMITED | 10839992 | 28/06/2017 | 02/11/2020 | Amber |
| BINEXX.COM LIMITED | 03283132 | 06/08/2004 | 08/11/2005 | Dissolved |
| CI MARKETS LIMITED | 04173096 | 06/08/2004 | 08/11/2005 | Strike Off |
| CITY INDEX MARKET MAKERS LIMITED | 01763101 | 06/08/2004 | 08/11/2005 | Strike Off |
| CITY INDEX RACING LIMITED | 02187599 | 06/08/2004 | 08/11/2005 | Strike Off |
| CITY INDEX SPORTS BARS LIMITED | 03004259 | 06/08/2004 | 08/11/2005 | Dissolved |
| CITY MARKETS LIMITED | 04150211 | 06/08/2004 | 08/11/2005 | Strike Off |
| DD&CO LIMITED | 00228785 | 11/07/2008 | 09/03/2012 | Silver |
| DDCAP LIMITED | 05493658 | 01/09/2005 | 09/03/2012 | Silver |
| DDGI LIMITED | 03393586 | 11/07/2008 | 09/03/2012 | One Red Flag |
| FINANCE INDEX LIMITED | 03283126 | 06/08/2004 | 08/11/2005 | Strike Off |
| FINSBURY SAILING LLP | OC305610 | 24/09/2003 | 09/03/2012 | Dissolved |
| GAIN CAPITAL HOLDINGS LTD | 02294980 | 24/01/2002 | 08/11/2005 | One Red Flag |
| GAIN CAPITAL UK LIMITED | 01761813 | 02/05/2002 | 08/11/2005 | Silver |
| Garban Information Systems Ltd | 01123401 | 26/08/1999 | 28/01/2002 | Dissolved |
| HARLOW (LONDON) LIMITED | 03879508 | 11/02/2000 | 02/04/2001 | Dissolved |
| ICAP MANAGEMENT SERVICES LIMITED | 02189561 | 01/02/1999 | 02/04/2001 | Silver |
| INTERCAPITAL CLEARING LIMITED | 03104640 | 06/08/2004 | 03/10/2007 | Dissolved |
| INTERCAPITAL LIMITED | 01423001 | 14/02/2000 | 02/04/2001 | Gold |
| IPGL LIMITED | 02011009 | 04/03/1997 | 09/03/2012 | Silver |
| IPGL NO.1 LTD | 06451019 | 20/11/2008 | 22/07/2013 | Silver |
| IPGL NO.11 LTD | 02524218 | 06/08/2004 | 31/08/2007 | Bronze |
| IPGL NO.2 LTD | 03607059 | 13/08/1998 | 09/03/2012 | Dissolved |
| IPGL NO.3 LTD | 03783810 | 06/08/2004 | 29/09/2006 | Dissolved |
| Icap.Com Ltd | 01631050 | 29/09/2000 | 02/04/2001 | Dissolved |
| Intercapital Currency Options Ltd | 04008668 | 24/07/2000 | 02/04/2001 | Dissolved |
| NEX INTERNATIONAL LIMITED | 03611426 | 09/09/1999 | 22/01/2003 | Silver |
| NUMIS CORPORATION LIMITED | 02375296 | 26/05/2005 | 16/02/2009 | Bronze |
| NUMIS SECURITIES LIMITED | 02285918 | 26/05/2005 | 23/11/2005 | Amber |
| PGI ORIGIN HOLDING COMPANY LTD | 03053842 | 15/11/2004 | 14/12/2006 | Silver |
| RANK DIGITAL LIMITED | 03796653 | 22/06/1999 | 27/01/2003 | Bronze |
| RANK INTERACTIVE DEVELOPMENT LIMITED | 03796656 | 22/06/1999 | 27/01/2003 | Dissolved |
| SPORTSLINE LIMITED | 03709620 | 06/08/2004 | 08/11/2005 | Dissolved |
| SPREADBET LIMITED | 03206466 | 06/08/2004 | 08/11/2005 | Dissolved |
| TFS-ICAP LIMITED | 04025995 | 30/11/2000 | 02/04/2001 | Gold |
| WILSCO 703 LIMITED | 04069082 | 10/05/2004 | 21/03/2006 | Dissolved |