| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ZIA UK LIMITED | 02470681 | 12/10/1994 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AECOM DESIGN BUILD LIMITED | 02699219 | 22/01/1993 | 23/12/1996 | Silver |
| AMEC BKW LIMITED | 00169831 | 06/04/1992 | 11/12/1996 | Gold |
| AMEC WOODALL DUCKHAM LIMITED | 01169613 | 08/06/1993 | 11/12/1996 | Dissolved |
| Amec Bpg | 00936893 | 09/08/1993 | 11/12/1996 | Dissolved |
| BABCOCK C 2019 LIMITED | 01398475 | 08/06/1993 | 11/12/1996 | Dissolved |
| BABCOCK KING-WILKINSON (UK) LIMITED | 01726732 | 02/07/1996 | 11/12/1996 | Dissolved |
| BABCOCK TS LIMITED | 02673276 | 20/12/1992 | 11/12/1996 | Dissolved |
| BABCOCK WOODALL - DUCKHAM LIMITED | 00163994 | 08/06/1993 | 11/12/1996 | Bronze |
| BABCOCK WOODALL-DUCKHAM (OVERSEAS) LIMITED | 00081133 | 08/06/1993 | 11/12/1996 | Dissolved |
| BISHOP WOODALL-DUCKHAM LIMITED | 02369273 | 08/06/1993 | 11/12/1996 | Dissolved |
| HIBERNA CONTRACT SERVICES LIMITED | 00457868 | 08/06/1993 | 11/12/1996 | Dissolved |
| HIBERNA LIMITED | 00897173 | 08/06/1993 | 11/12/1996 | Not Trading |
| KAISER ENGINEERS LIMITED | 00923096 | 24/10/1997 | 31/08/1999 | Dissolved |
| Technical Resources (U K) Ltd | 01562002 | 06/04/1993 | 06/04/1994 | Dissolved |
| WOODALL-DUCKHAM INVESTMENTS LIMITED | 00970007 | 08/06/1993 | 11/12/1996 | Dissolved |
| Zia Europe Ltd | 02470683 | 12/10/1994 | 11/12/1996 | Dissolved |