| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Merz Rendel Williamson Ltd | 01987268 | 25/12/1990 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Merz & McLellan Properties Ltd | 00123950 | 22/02/1992 | 20/06/1994 | Dissolved |
| Merz & McLellan Services Ltd | 00496012 | 01/11/1991 | 20/06/1994 | Dissolved |
| Merz Associates Ltd | 00659850 | 01/11/1991 | 16/07/1996 | Dissolved |
| Merz Orchard Ltd | 00707372 | 14/08/1991 | 10/08/1992 | Dissolved |
| PARSONS BRINCKERHOFF LTD | 02554514 | 01/11/1991 | 25/06/1996 | Bronze |
| Pb Power Holdings Ltd | 02560063 | 19/11/1991 | 25/01/1995 | Dissolved |