| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| DONKIN FANS LIMITED | SC210167 | 31/12/2000 | Dissolved |
| Godfrey Engineering Ltd | 00871715 | 31/12/2000 | Dissolved |
| HOWDEN 3TS INTERNATIONAL LIMITED | SC206680 | 31/12/2000 | Dissolved |
| HOWDEN 3TS INTERNATIONAL LIMITED | SC206680 | 10/04/2009 | Dissolved |
| Howden Air Preheater Company Ltd | SC167692 | 31/12/2000 | Dissolved |
| Howden Buffalo Ltd | 02675381 | 31/12/2000 | Dissolved |
| Sir George Godfrey & Partners Ltd | 00823769 | 31/12/2000 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ENGART FANS LIMITED | 00419515 | 31/12/2000 | 20/01/2012 | Silver |
| H UK ENGINEERING LIMITED | SC291298 | 14/11/2005 | 20/01/2012 | Dissolved |
| H UK ENGINEERING LIMITED | SC291298 | 22/10/2008 | 20/01/2012 | Dissolved |
| HCL PENSION TRUSTEE LIMITED | 06292816 | 20/09/2007 | 20/01/2012 | Dissolved |
| HOWDEN COMPRESSORS LIMITED | SC053832 | 10/01/2007 | 20/01/2012 | Gold |
| HOWDEN ENGINEERING LIMITED | SC058676 | 31/12/2000 | 20/01/2012 | Not Trading |
| HOWDEN FANS LIMITED | 00485925 | 31/12/2000 | 20/01/2012 | Dissolved |
| HOWDEN GROUP LIMITED | 00472621 | 31/12/2000 | 20/01/2012 | Bronze |
| HOWDEN GROUP LIMITED | 00472621 | 31/03/2008 | 20/01/2012 | Bronze |
| HOWDEN HOLDINGS UNLIMITED | 04493562 | 31/10/2002 | 20/01/2012 | Silver |
| HOWDEN HOLDINGS UNLIMITED | 04493562 | 06/08/2007 | 20/01/2012 | Silver |
| JAMES HOWDEN & COMPANY LIMITED | SC009324 | 31/12/2000 | 20/01/2012 | Silver |
| JAMES HOWDEN & COMPANY LIMITED | SC009324 | 31/03/2008 | 20/01/2012 | Silver |
| JAMES HOWDEN & GODFREY OVERSEAS LIMITED | SC045968 | 31/12/2000 | 20/01/2012 | Gold |
| JAMES HOWDEN & GODFREY OVERSEAS LIMITED | SC045968 | 22/10/2008 | 20/01/2012 | Gold |
| MACLEAN DOUGLAS LLP | SO300105 | 28/05/2002 | 21/03/2003 | Dissolved |
| NOVENCO AEREX LIMITED | 00631473 | 31/12/2000 | 20/01/2012 | Dissolved |
| WIRTH (UK) LIMITED | SC180547 | 31/12/2000 | 20/01/2012 | Dissolved |