| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| 00026461 LIMITED | 00026461 | 19/05/2000 | Strike Off |
| ATLAS COMPOSITES LIMITED | 03482307 | 08/02/2013 | Dissolved |
| Baxter Woodhouse & Taylor Ltd | 00069453 | 19/05/2000 | Dissolved |
| Bird Precision Bellows Ltd | 01221634 | 19/05/2000 | Dissolved |
| CASTLEGATE 408 LIMITED | 05621115 | 08/02/2013 | Dissolved |
| Cork Industries Ltd | 03211881 | 19/05/2000 | Dissolved |
| FELLCREST LIMITED | 02526941 | 19/05/2000 | Dissolved |
| Green,E,& Son (Castings) Ltd | 00138099 | 19/05/2000 | Dissolved |
| HENRY HARGREAVES & SONS LIMITED | 00543146 | 19/05/2000 | Dissolved |
| Hamsard One Thousand & Sixty Four Ltd | 03447395 | 19/05/2000 | Dissolved |
| Le Bas Tube Co Ltd | 00919629 | 19/05/2000 | Dissolved |
| M&W GRAZEBROOK LIMITED | 00942355 | 19/05/2000 | Strike Off |
| NITROTEC LIMITED | 00825606 | 19/05/2000 | Dissolved |
| Paragon Group Ltd | 01855978 | 19/05/2000 | Dissolved |
| SENIOR CONTROL ENGINEERING LTD. | 00440221 | 19/05/2000 | Dissolved |
| SENIOR ENGINEERING (FINANCE) LIMITED | 01997378 | 19/05/2000 | Dissolved |
| SENIOR FINANCE THREE | 05080222 | 30/03/2004 | Dissolved |
| SENIOR FLEXONICS TUBE COMPONENTS LIMITED | 00503492 | 19/05/2000 | Dissolved |
| SENIOR HOLDINGS LIMITED | 00932648 | 19/05/2000 | Dissolved |
| SENIOR INDUSTRIAL PLASTICS LIMITED | 01139744 | 19/05/2000 | Strike Off |
| SENIOR OPERATIONS LIMITED | 00953650 | 19/05/2000 | Dissolved |
| SENIOR POWER PRODUCTS LIMITED | 00608590 | 19/05/2000 | Not Trading |
| SIGMA COMPONENTS HOLDINGS LIMITED | 10010945 | 13/03/2017 | Amber |
| Senior Control Engineering (No 5) Ltd | 00425659 | 19/05/2000 | Dissolved |
| Senior Control Engineering (No.3) Limited | 00327959 | 19/05/2000 | Dissolved |
| Senior Control Engineering (No.4) Limited | 00208089 | 19/05/2000 | Dissolved |
| Senior Engineering (Littleborough) Ltd | 01397634 | 19/05/2000 | Dissolved |
| Senior Engineering Investments Bv | FC023855 | 25/04/2002 | Dissolved |
| Senior Finance Americas One Ltd | 04897909 | 12/09/2003 | Dissolved |
| Senior Finance Americas Two | 04926887 | 09/10/2003 | Dissolved |
| Stovestile Ltd | 01898968 | 19/05/2000 | Dissolved |
| TUBE COMPONENTS LIMITED | 01059437 | 19/05/2000 | Dissolved |
| The Power Flexible Tubing Company Ltd | 00151983 | 19/05/2000 | Dissolved |
| Thermal Efficiency Ltd | 00515732 | 19/05/2000 | Dissolved |
| Thornskill Ltd | 02154662 | 20/12/2000 | Dissolved |
| WESTON EU LIMITED | 00424432 | 25/11/2011 | Dissolved |
| WILLCOX HOSE (LEEDS) LIMITED | 02517912 | 20/12/2000 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AMNITEC LIMITED | 00587472 | 14/12/2000 | 10/08/2004 | Silver |
| ATLAS COMPOSITES LIMITED | 01981314 | 19/05/2000 | 18/05/2015 | Not Trading |
| CARCLO PLC | 00196249 | 01/01/2018 | 24/03/2020 | Silver |
| Concast Refractory Industries Ltd | 02113508 | 01/12/1995 | 27/03/1998 | Dissolved |
| Concast Refractory Industries Ltd | 02113508 | 01/12/1995 | 27/03/1998 | Dissolved |
| EXENTEC U.K. HARGREAVES LTD | 00288899 | 13/12/2000 | 16/10/2012 | Bronze |
| FLEXONICS LIMITED | 02861142 | 19/05/2000 | 18/05/2015 | Not Trading |
| KE-BURGMANN UK LIMITED | 04500097 | 31/07/2002 | 27/09/2002 | Strike Off |
| MORGAN CRUCIBLE PENSION TRUSTEES LIMITED | 02017656 | 01/10/1996 | 27/03/1998 | Dissolved |
| MORGANITE CRUCIBLE LIMITED | 02133533 | 04/04/1995 | 27/03/1998 | Silver |
| MORGANITE CRUCIBLE LIMITED | 02133533 | 23/02/1993 | 27/03/1998 | Silver |
| Morgan Refractories Ltd | 00461074 | 01/12/1995 | 27/03/1998 | Dissolved |
| Morgan Refractories Ltd | 00461074 | 01/12/1995 | 27/03/1998 | Dissolved |
| Morganite Thermal Ceramics Ltd | 00679648 | 01/12/1995 | 27/03/1998 | Dissolved |
| Morganite Thermal Ceramics Ltd | 00679648 | 01/12/1995 | 27/03/1998 | Dissolved |
| Morganite Thermal Designs Ltd | 00730138 | 01/12/1995 | 27/03/1998 | Dissolved |
| Morganite Thermal Designs Ltd | 00730138 | 01/12/1995 | 27/03/1998 | Dissolved |
| SENIOR AEROSPACE LIMITED | 01127979 | 19/05/2000 | 18/05/2015 | Not Trading |
| SENIOR AUTOMOTIVE LIMITED | 01997380 | 19/05/2000 | 18/05/2015 | Not Trading |
| SENIOR ENGINEERING INVESTMENTS LIMITED | 00938893 | 19/05/2000 | 13/05/2015 | Gold |
| SENIOR FINANCE FOUR LIMITED | 06932014 | 30/04/2013 | 13/05/2015 | Amber |
| SENIOR FINANCE SIX LIMITED | 07849907 | 30/04/2013 | 13/05/2015 | Silver |
| SENIOR FIVE LIMITED | 07772298 | 13/09/2011 | 13/05/2015 | Strike Off |
| SENIOR FLEXONICS LIMITED | 05246240 | 30/09/2004 | 18/05/2015 | Not Trading |
| SENIOR PLC | 00282772 | 01/08/2000 | 31/05/2015 | Gold |
| SENIOR TRUSTEE LIMITED | 01997379 | 31/05/2000 | 03/02/2015 | Not Trading |
| SENIOR UK LIMITED | 01928053 | 14/12/2000 | 13/05/2015 | Bronze |
| THERMAL ENGINEERING HOLDING LIMITED | 07119234 | 29/11/2013 | 13/05/2015 | Dissolved |
| THERMAL ENGINEERING LIMITED | 02212132 | 29/11/2013 | 13/05/2015 | Dissolved |
| TYMAN LIMITED | 02806007 | 01/04/2015 | 31/03/2020 | Silver |
| Tennant Radiant Heat Ltd | 00332360 | 01/12/1995 | 27/03/1998 | Dissolved |
| Tennant Radiant Heat Ltd | 00332360 | 01/12/1995 | 27/03/1998 | Dissolved |
| VIDENDUM PLC | 00227691 | 02/10/2013 | 02/04/2018 | Gold |
| WSP GROUP LIMITED | 02136404 | 01/01/2006 | 01/08/2012 | Gold |