| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| G.H.WHITE AND COMPANY,LIMITED | 00367179 | 28/02/1997 | Dissolved |
| HILLFOOT FORGE LIMITED | 01658620 | 28/02/1997 | Dissolved |
| JAM DEVELOPERS LLP | OC383741 | 25/03/2013 | One Red Flag |
| Langley Forged Products Ltd | 02675144 | 29/08/2008 | Dissolved |
| S.T.W. (NON-DESTRUCTIVE) LIMITED | 01573493 | 17/12/1990 | Silver |
| SHEFFIELD QUALITY FORGE LIMITED | 07543169 | 25/02/2011 | Dissolved |
| SHEFFIELD SPECIAL STEELS LIMITED | 02654947 | 12/12/1991 | Not Trading |
| SPECIAL FORGED PRODUCTS LIMITED | 00663388 | 29/08/2008 | Dissolved |
| SPECIAL MACHINED PRODUCTS LIMITED | 02030900 | 18/06/1998 | Silver |
| SPECIAL QUALITY ALLOYS LIMITED | 01985443 | 30/10/1992 | Gold |
| SPECIAL STEEL CO.,LIMITED | 00208641 | 30/10/1991 | Silver |
| SPECIAL STEELS LIMITED | 03046151 | 12/05/1995 | Silver |
| SPECIAL TESTING LIMITED | 00355744 | 30/10/1991 | Silver |
| Special Manufacturing Ltd | 04565390 | 17/10/2002 | Dissolved |
| Special Testing S W Ltd | 02964954 | 05/09/1994 | Dissolved |
| Special Testing Works (Ne) Limited | 02713056 | 08/05/1992 | Dissolved |
| VALUE HEAT TREAT LIMITED | 13159630 | 26/01/2021 | One Red Flag |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| HALLAMSHIRE GOLF CLUB LIMITED | 00119307 | 26/04/1992 | 24/03/1994 | One Red Flag |
| SPECIAL STEEL CO.,LIMITED | 00208641 | 01/06/1995 | 28/02/1997 | Silver |