| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ACER E&M CONSULTANTS LIMITED | 01859695 | 23/03/1994 | Dissolved |
| Acer Freeman Fox (Scotland) Ltd | SC093130 | 23/03/1994 | Dissolved |
| Acer Freeman Fox (Wales) Ltd | 01710711 | 23/03/1994 | Dissolved |
| Acer Freeman Fox Ltd | 01720646 | 23/03/1994 | Dissolved |
| Fransis Developments Limited | 01509523 | 31/12/1991 | Dissolved |
| Fransis Developments Limited | 01509523 | 31/12/1991 | Dissolved |
| Isis International Ltd | 01509349 | 31/12/1991 | Dissolved |
| OSCAR WALLACE EVANS (CHINA) LIMITED | 02806921 | 12/05/1993 | Dissolved |
| OSCAR WALLACE EVANS (CHINA) LIMITED | 02806921 | 12/05/1993 | Dissolved |
| Roughton & Fenton Ltd | 01942688 | 23/03/1994 | Dissolved |
| Roughton and Fenton (Wales) Ltd | 02310216 | 23/03/1994 | Dissolved |
| Roughton and Fenton (West) Ltd | 02118217 | 23/03/1994 | Dissolved |
| Roughton and Fenton Consulting Engineers Ltd | 02185414 | 23/03/1994 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ACER JOHN TAYLOR LIMITED | 01348874 | 23/03/1994 | 29/12/2000 | Dissolved |
| ACER MOXLEY LIMITED | 02756424 | 23/03/1994 | 19/11/1998 | Dissolved |
| ACER PARTNERSHIPS LIMITED | 02561362 | 23/03/1994 | 29/12/2000 | Strike Off |
| ACER SIR BRUCE WHITE LIMITED | 02560699 | 23/03/1994 | 29/12/2000 | Dissolved |
| ARCADIS CONSULTING (UK) LIMITED | 02212959 | 23/03/1994 | 29/12/2000 | Silver |
| ARCADIS CONSULTING EUROPE LIMITED | 02273559 | 28/07/1992 | 29/12/2000 | Silver |
| ARCADIS CONSULTING GROUP LIMITED | 02115472 | 23/03/1994 | 29/09/1993 | One Red Flag |
| Acer Butler & Chappell Ltd | 01859690 | 23/03/1994 | 29/12/2000 | Dissolved |
| Acer Icf Ltd | 02534052 | 23/03/1994 | 29/12/2000 | Dissolved |
| Acer Services Ltd | 02220702 | 23/03/1994 | 29/12/2000 | Dissolved |
| Altwell Ltd | 01691929 | 23/03/1994 | 29/12/2000 | Dissolved |
| Engineering Geology Ltd | 00960681 | 23/03/1994 | 29/12/2000 | Dissolved |
| HYDER 1 LIMITED | 02480999 | 23/03/1994 | 29/12/2000 | Dissolved |
| HYDER CONSULTING OVERSEAS LIMITED | 02690216 | 15/02/1994 | 29/12/2000 | Dissolved |
| Hcl(No.1) Ltd | 02162463 | 23/03/1994 | 29/12/2000 | Dissolved |
| Hyder Engineering Ltd | 02452906 | 21/12/1993 | 29/12/2000 | Dissolved |
| ISIS FORKLIFTS LIMITED | 00681111 | 31/12/1991 | 20/08/1992 | Dissolved |
| Isis Estates Ltd | 00986587 | 31/12/1991 | 20/08/1992 | Dissolved |
| Isis Hire Ltd | 00474901 | 31/12/1991 | 20/08/1992 | Dissolved |
| Isis International Ltd | 01509349 | 31/12/1991 | 20/08/1992 | Dissolved |
| Isis Properties Ltd | 00934422 | 31/12/1991 | 20/08/1992 | Dissolved |
| Isis Sales Ltd | 01510038 | 31/12/1991 | 20/08/1992 | Dissolved |
| Isis Vehicle Rentals Ltd | 01942183 | 31/12/1991 | 20/08/1992 | Dissolved |
| Maple Processes Ltd | 02562121 | 23/03/1994 | 29/12/2000 | Dissolved |
| Pen Y Fan Properties Ltd | 02805438 | 26/03/1993 | 25/01/1994 | Dissolved |
| Sheffield Park Hotel Limited | 01898629 | 16/10/1991 | 20/08/1992 | Dissolved |
| Tecnecon Ltd | 01868909 | 23/03/1994 | 29/12/2000 | Dissolved |
| WELSH WATER INTERNATIONAL LIMITED | 02366589 | 27/03/1997 | 31/03/1998 | Dissolved |