| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| JOSEPH ASH CHESTERFIELD LIMITED | 01229116 | 11/03/2008 | Dissolved |
| SEVERFIELD PLC | 01721262 | 04/10/2022 | Gold |
| TECHSPAN SYSTEMS LIMITED | 05419940 | 11/03/2008 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ASH & LACY BUILDING SYSTEMS LIMITED | 00149058 | 11/03/2008 | 22/07/2011 | Silver |
| ASH & LACY LIMITED | 00047169 | 11/03/2008 | 30/04/2019 | Gold |
| ASH & LACY MANUFACTURING LIMITED | 03008964 | 11/03/2008 | 30/04/2019 | Gold |
| ASH & LACY SERVICES LIMITED | 02798286 | 11/03/2008 | 30/04/2019 | Silver |
| BARKERS ENGINEERING LIMITED | 00597466 | 11/03/2008 | 01/08/2018 | Gold |
| BERGEN PIPE SUPPORTS GROUP LIMITED | 01013871 | 11/03/2008 | 30/04/2019 | Silver |
| BERGEN PIPE SUPPORTS LIMITED | 00926644 | 11/03/2008 | 30/04/2019 | Amber |
| BIRTLEY GROUP LIMITED | 00602575 | 11/03/2008 | 01/08/2018 | Silver |
| BROMFORD IRON AND STEEL COMPANY LIMITED | 00447036 | 11/03/2008 | 18/08/2014 | Dissolved |
| CA TRAFFIC LIMITED | 02964439 | 11/03/2008 | 27/04/2017 | Dissolved |
| HAWKSHEAD PROPERTIES LIMITED | 00562451 | 11/03/2008 | 30/04/2019 | Gold |
| HILL & SMITH (AMERICAS) 2 LIMITED | 10783462 | 22/05/2017 | 30/04/2019 | Amber |
| HILL & SMITH (AMERICAS) LIMITED | 07269581 | 01/06/2010 | 30/04/2019 | Silver |
| HILL & SMITH (FRANCE) LIMITED | 06768033 | 08/12/2008 | 30/04/2019 | Dissolved |
| HILL & SMITH (INTERNATIONAL) LIMITED | 11331411 | 26/04/2018 | 30/04/2019 | Amber |
| HILL & SMITH (TREASURY) LIMITED | 06814150 | 09/02/2009 | 30/04/2019 | Amber |
| HILL & SMITH (USA) LIMITED | 06876775 | 14/04/2009 | 30/04/2019 | Amber |
| HILL & SMITH GALVANIZED PRODUCTS LIMITED | 06876871 | 14/04/2009 | 30/04/2019 | Not Trading |
| HILL & SMITH INFRASTRUCTURE LIMITED | 01270322 | 11/03/2008 | 01/08/2018 | Silver |
| HILL & SMITH OVERSEAS LIMITED | 06614400 | 16/06/2008 | 30/04/2019 | Bronze |
| HILL & SMITH PLC | 00671474 | 11/03/2008 | 30/04/2019 | Gold |
| JOSEPH ASH LIMITED | 00154773 | 11/03/2008 | 01/08/2018 | Bronze |
| LIONWELD KENNEDY FLOORING LIMITED | 05274797 | 11/03/2008 | 01/08/2018 | Bronze |
| MALLATITE LIMITED | 02621328 | 11/03/2008 | 01/08/2018 | Amber |
| PIPE SUPPORTS OVERSEAS LIMITED | 06682786 | 04/09/2008 | 30/04/2019 | Not Trading |
| PREMIER GALVANIZING LIMITED | 03873106 | 25/11/2015 | 01/08/2018 | Amber |
| REDMAN FISHER ENGINEERING LIMITED | 00169316 | 11/03/2008 | 30/04/2019 | Gold |
| SDS PIPE SYSTEMS LIMITED | 01983393 | 11/03/2008 | 01/08/2018 | One Red Flag |
| TECHNOCOVER LTD. | 02845757 | 13/07/2016 | 01/08/2018 | Bronze |
| VARLEY & GULLIVER LIMITED | 00330433 | 11/03/2008 | 01/08/2018 | Amber |
| VISTA GALVANIZING (UK) LIMITED | 06880025 | 17/04/2009 | 30/04/2019 | Not Trading |