| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| AC SERVICES (SOUTH WEST) LIMITED | 04689630 | 28/08/2015 | Dissolved |
| DORSET SOLAR LIMITED | 12439984 | 03/02/2020 | Bronze |
| HIGH TENSION WIRES LIMITED | 00236194 | 03/10/1991 | Gold |
| LA FLEUR DE LYS LIMITED | 04700231 | 12/08/2003 | Bronze |
| LONGMEAD FINANCE LIMITED | 05092587 | 27/07/2010 | Silver |
| Russell & Son Ltd | 00152465 | 08/06/1995 | Dissolved |
| S.Parke & Co. Ltd | 00280427 | 08/06/1995 | Dissolved |
| STALBRIDGE FINANCE LTD | 06600224 | 22/05/2008 | Silver |
| STATEVIEW FINANCE LIMITED | 02455267 | 27/12/1991 | Silver |
| UK SPRING MANUFACTURERS' ASSOCIATION | 00701484 | 06/07/1991 | Gold |
| WILLIAM HUGHES LIMITED | 00243035 | 31/12/1993 | Silver |
| WILLIAM HUGHES SIDINGS LTD | 06384463 | 28/09/2007 | Bronze |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ICARUS COMPUTER SYSTEMS LIMITED | 01447748 | 31/12/1991 | 31/12/2014 | Bronze |
| THE INSTITUTE OF SPRING TECHNOLOGY LTD. | 03305326 | 28/01/1997 | 30/03/2010 | Gold |