| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| 00068275 LIMITED | 00068275 | 01/11/1992 | One Red Flag |
| ACROW GALVANIZING LIMITED | 01414982 | 10/12/1996 | Not Trading |
| B E WEDGE LIMITED | 04669648 | 31/01/2005 | Not Trading |
| B.E. WEDGE HOLDINGS LIMITED | 00336600 | 08/03/1991 | Gold |
| B.E.W.H. PENSION TRUSTEE LIMITED | 08570090 | 14/06/2013 | Silver |
| C.H.T. GALVANIZING LIMITED | 02538538 | 10/09/1991 | Not Trading |
| CAPITAL GALVANIZING LIMITED | 00667930 | 10/12/1996 | Not Trading |
| CENTRIFUGE GALVANIZING LIMITED | 01575900 | 08/03/1991 | Not Trading |
| EAST ANGLIAN GALVANIZING LIMITED | 00947332 | 10/12/1996 | Not Trading |
| EDWARD HOWELL GALVANIZERS LIMITED | 00296766 | 08/03/1991 | Not Trading |
| HASCO-THERMIC LIMITED | 01013744 | 08/03/1991 | Silver |
| HUMBER GALVANIZING LIMITED | 03011476 | 10/12/1996 | Not Trading |
| LANARKSHIRE GALVANIZING CO LIMITED | SC116891 | 10/12/1996 | Not Trading |
| LEICESTER GALVANIZING SERVICES LIMITED | 00697485 | 10/12/1996 | Not Trading |
| MANCHESTER GALVANIZING LTD | 00539872 | 10/12/1996 | Not Trading |
| MERSEYSIDE GALVANIZING LIMITED | 01556126 | 10/12/1996 | Not Trading |
| METALTREAT LIMITED | 00799625 | 10/12/1996 | Not Trading |
| NEWPORT GALVANIZERS LIMITED | 00859576 | 10/12/1996 | Not Trading |
| PARKES GALVANIZING LIMITED | 01697282 | 08/03/1991 | Not Trading |
| PILLAR GALVANIZING LIMITED | 00447722 | 10/12/1996 | Not Trading |
| PILLAR SPIN GALVANIZING LIMITED | 01523152 | 10/12/1996 | Not Trading |
| PILLAR-WEDGE GROUP LIMITED | 01026186 | 26/03/1991 | Not Trading |
| PILLAR-WEDGE LIMITED | 05024844 | 28/01/2004 | Not Trading |
| SCOTTISH GALVANIZERS LIMITED | SC027121 | 10/12/1996 | Not Trading |
| SOUTH EAST GALVANIZERS LIMITED | 03228164 | 14/10/1996 | Not Trading |
| SOUTH WEST GALVANIZERS LIMITED | 01920615 | 08/03/1991 | Not Trading |
| TETTENHALL COLLEGE (INCORPORATED) | 00141727 | 21/06/1995 | Gold |
| WEDGE GROUP GALVANIZING LIMITED | 00515891 | 08/03/1991 | Gold |
| WESSEX GALVANIZERS LIMITED | 02414902 | 30/09/1991 | Not Trading |
| WORKSOP GALVANIZING LIMITED | 00795346 | 10/12/1996 | Not Trading |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| E.E.F. TRUSTEES LIMITED | 00727080 | 24/04/2002 | 09/07/2008 | Dissolved |
| EEF (WM) ONE LIMITED | 04898142 | 20/12/2004 | 01/09/2009 | Dissolved |
| EEF (WM) TWO LIMITED | 04749424 | 20/12/2004 | 01/09/2009 | Dissolved |
| EUROPEAN GENERAL GALVANIZERS ASSOCIATION | 02572689 | 10/01/1992 | 23/11/2023 | Gold |
| ZINC INFORMATION CENTRE | 04283396 | 05/05/2004 | 01/01/2012 | Amber |