| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BOOTH INDUSTRIES INTERNATIONAL LIMITED | 13371731 | 03/05/2021 | Silver |
| CROWN UK LIMITED | 02639945 | 04/06/2004 | Amber |
| HAYWARD TYLER GROUP LIMITED | 03232768 | 31/08/2017 | Silver |
| HAYWARD TYLER HOLDINGS LIMITED | 03251397 | 31/08/2017 | Silver |
| HAYWARD TYLER LIMITED | 03450138 | 31/08/2017 | Silver |
| MALONEY METALCRAFT LTD | 03318710 | 03/07/2013 | Gold |
| NVIRO CLEANTECH LIMITED | 05606469 | 31/08/2017 | Bronze |
| REDGLADE ASSOCIATES LIMITED | 05303263 | 31/08/2017 | Silver |
| REDGLADE INVESTMENTS LTD | 05501823 | 31/08/2017 | Bronze |
| SLACK & PARR GROUP LIMITED | 06625350 | 31/08/2017 | Bronze |
| SOUTHBANK UK LIMITED | 05474162 | 31/08/2017 | One Red Flag |
| SPECIALIST ENERGY GROUP TRUSTEE LIMITED | 08144481 | 31/08/2017 | Dissolved |
| STAINLESS METALCRAFT (CHATTERIS) LIMITED | 02506189 | 13/10/2004 | Bronze |
| TRANSKEM PLANT LIMITED | SC017991 | 08/12/2021 | Silver |
| VARLEY PUMPS LIMITED | 03467902 | 31/08/2017 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| C & H PRECISION FINISHERS LIMITED | 02905047 | 02/09/2002 | 27/05/2016 | Silver |
| HARTSHILL VENTURES LIMITED | 05783108 | 04/03/2016 | 27/05/2016 | Dissolved |
| HOWDEN TURBO UK LIMITED | 09703368 | 31/08/2017 | 11/03/2021 | One Red Flag |
| KURODA JENA TEC HOLDINGS LTD. | 06347625 | 20/08/2007 | 08/11/2012 | One Red Flag |
| SIGMA COMPONENTS (DERBY) LIMITED | 02751564 | 23/11/2012 | 27/05/2016 | Dissolved |
| SIGMA COMPONENTS (FARNBOROUGH) LIMITED | 06268374 | 04/06/2007 | 27/05/2016 | Amber |
| SIGMA PRECISION COMPONENTS LIMITED | 05321609 | 19/06/2006 | 27/05/2016 | One Red Flag |
| SIGMA PRECISION COMPONENTS UK LIMITED | 00781039 | 21/09/2006 | 27/05/2016 | Silver |