| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CASTLE SYNDICATE MANAGEMENT LIMITED | 01315505 | 14/08/1991 | Dissolved |
| Chiltern Underwriting Agents Ltd | 00843565 | 31/12/1991 | Dissolved |
| DEVONSHIRE UNDERWRITING AGENCIES LIMITED | 01892247 | 14/08/1991 | Insolvent |
| DRAKE INSURANCE PLC | 01262640 | 31/05/2002 | Insolvent |
| ERMASURE LIMITED | 02819933 | 08/07/2015 | Dissolved |
| FIRSTCITY INSURANCE GROUP LIMITED | 02728925 | 05/01/2004 | Dissolved |
| FIRSTCITY PARTNERSHIP LIMITED | 00450234 | 10/03/2004 | Dissolved |
| FIRSTCITY RESOURCES LIMITED | 02212035 | 01/04/2010 | Dissolved |
| Firstcity Employees Trustee Ltd | 03340928 | 16/12/2004 | Dissolved |
| Firstcity Trustee Ltd | 03334584 | 22/03/2005 | Dissolved |
| G W Run-Off Ltd | 02627814 | 09/07/1992 | Dissolved |
| SOC GROUP PLC | 03403474 | 09/07/1997 | Dissolved |
| STURDY INSURANCE BROKERS LIMITED | 04603972 | 05/03/2021 | Gold |
| UIB HOLDINGS (UK) LIMITED | 02480634 | 06/01/2012 | Silver |
| UNITED INSURANCE BROKERS LIMITED | 02034497 | 06/01/2012 | Amber |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ARGENTA SYNDICATE MANAGEMENT LIMITED | 03632880 | 27/09/1999 | 10/09/2004 | Silver |
| Abtrust Securities Ltd | 01856148 | 01/01/1994 | 03/04/1996 | Dissolved |
| Bowman Investigations Ltd | 02523830 | 01/04/1994 | 03/04/1996 | Dissolved |
| CANOPIUS MANAGING AGENTS LIMITED | 01514453 | 31/07/1991 | 03/04/1996 | Silver |
| CAPITA SYNDICATE MANAGEMENT LIMITED | 01154315 | 08/11/1993 | 13/01/1997 | Dissolved |
| Castle Members Agents Ltd | 02690094 | 11/06/1992 | 03/04/1996 | Dissolved |
| Castle Underwriting Holdings Ltd | 01708524 | 31/07/1991 | 03/04/1996 | Dissolved |
| DUNCANSON & HOLT EUROPE LIMITED | 02354197 | 12/02/1997 | 30/06/1999 | Amber |
| DUNCANSON & HOLT SYNDICATE MANAGEMENT LIMITED | 03116934 | 04/06/1996 | 24/05/2000 | Dissolved |
| Duncanson & Holt Agencies Ltd | 03047867 | 04/06/1996 | 30/06/1999 | Dissolved |
| ERMASURE LIMITED | 02819933 | 01/04/1994 | 31/01/2011 | Dissolved |
| GRACECHURCH UTG NO. 302 LIMITED | 03405762 | 17/07/1997 | 12/05/2005 | Silver |
| GRACECHURCH UTG NO. 303 LIMITED | 03582693 | 29/06/1998 | 12/05/2005 | Amber |
| GRACECHURCH UTG NO. 304 LIMITED | 03800821 | 30/06/1999 | 12/05/2005 | Dissolved |
| GRACECHURCH UTG NO. 305 LIMITED | 03799695 | 19/10/2000 | 12/05/2005 | Dissolved |
| GRACECHURCH UTG NO. 379 LIMITED | 02854987 | 03/06/1996 | 20/01/2000 | Dissolved |
| LANDMARK UNDERWRITING LIMITED | 05103113 | 30/12/2013 | 23/12/2014 | Bronze |
| Lrg Services Ltd | 02343560 | 18/04/1997 | 20/01/2000 | Dissolved |
| NEWLINE UNDERWRITING MANAGEMENT LIMITED | 03223686 | 20/08/1996 | 08/11/2001 | Silver |
| NEWMARKET (U.K.) HOLDINGS LIMITED | 03715874 | 31/07/1999 | 21/09/2001 | Not Trading |
| NEWMARKET CORPORATE MEMBER LIMITED | 03715907 | 01/07/1999 | 21/09/2001 | Insolvent |
| Newmarket Underwriting Ltd | 03716017 | 01/07/1999 | 21/09/2001 | Dissolved |
| PRIME PROFESSIONS LIMITED | 05386956 | 11/11/2010 | 18/06/2013 | Dissolved |
| Surveyors Direct Ltd | 02398764 | 14/08/1991 | 03/04/1996 | Dissolved |
| TRAFALGAR UNDERWRITING AGENCIES LIMITED | 02139290 | 27/11/1996 | 30/06/1999 | Dissolved |
| TRENWICK UK LIMITED | 02186145 | 14/07/1993 | 03/04/1996 | Not Trading |
| The Peoples Republic of Cosec Ltd | 03340563 | 20/03/1997 | 31/10/2000 | Dissolved |
| Tower Underwriting Agents Ltd | 01892922 | 01/08/1993 | 03/04/1996 | Dissolved |