| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Leasequick Ltd | 02712215 | 30/03/1994 | Dissolved |
| Psb (Newmarket) Services Ltd | 02759743 | 19/11/1992 | Dissolved |
| Psb Lighter Than Air Ltd | 05063474 | 05/03/2004 | Dissolved |
| Psb Realty Ltd | 02264265 | 30/03/1994 | Dissolved |
| Qualisound Limited | 02608156 | 01/09/1995 | Dissolved |
| Qualitair Aviation Group Ltd | 02477610 | 01/02/1993 | Dissolved |
| Qualitair Information Services Ltd | 02477613 | 01/09/1995 | Dissolved |
| Qualitair School of Air Maintenance Ltd | 02640065 | 01/02/1993 | Dissolved |
| Qualitair Training Services Ltd | 02477615 | 01/02/1993 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CLICK AND TELL MEDIA LIMITED | 03711758 | 11/02/1999 | 18/09/2006 | Dissolved |
| FATHER CHRISTMAS LIMITED | 03634489 | 25/09/1998 | 18/09/2006 | Amber |
| FATHER CHRISTMAS.COM LIMITED | 03976810 | 19/04/2000 | 18/09/2006 | Dissolved |
| NETCEED UK LIMITED | 01349036 | 01/02/1993 | 01/04/1993 | Silver |
| PSB (NEWMARKET) LIMITED | 01812652 | 01/02/1993 | 25/03/2008 | Not Trading |
| PSB HOLDINGS LIMITED | 00943465 | 01/02/1993 | 16/11/2007 | Bronze |
| Psb (Newmarket) Services Ltd | 02759743 | 19/11/1992 | 30/11/2001 | Dissolved |
| Psb Realty Ltd | 02264265 | 29/11/1991 | 22/11/2002 | Dissolved |
| QUALITAIR AVIATION GROUP LIMITED | 02660605 | 01/09/1995 | 23/08/2005 | One Red Flag |
| QUALITAIR AVIATION SERVICES LIMITED | 02115309 | 14/03/1994 | 23/08/2005 | One Red Flag |
| SWYNFORD PADDOCKS STUD LIMITED | 01864097 | 01/02/1993 | 25/03/2008 | Not Trading |