| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Ceri Hill Ltd | 01418224 | 15/01/1991 | Dissolved |
| Ceri Hill Ltd | 01418224 | 15/01/1991 | Dissolved |
| Ecostream Ltd | 03116464 | 08/05/1996 | Dissolved |
| Hyder Industrial Water Ltd | 03145350 | 09/05/1997 | Dissolved |
| Uk Highways M6 Ltd | 03045708 | 13/07/1995 | Dissolved |
| Williams,Penny,Ltd | 02029768 | 01/01/1992 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ABERTEC LIMITED | 01803984 | 18/03/1992 | 25/03/2000 | Dissolved |
| ARCADIS CONSULTING EUROPE LIMITED | 02273559 | 11/12/1992 | 14/03/1995 | Silver |
| ARCADIS CONSULTING GROUP LIMITED | 02115472 | 21/02/1993 | 01/01/1995 | One Red Flag |
| CABLETEL CARDIFF LIMITED | 02740659 | 28/03/1996 | 07/10/1996 | Dissolved |
| CABLETEL NEWPORT | 02478879 | 28/03/1996 | 07/10/1996 | Dissolved |
| CABLETEL WEST GLAMORGAN LIMITED | 00623197 | 28/03/1996 | 07/10/1996 | Dissolved |
| CHANNEL ENVIRONMENTAL SERVICES LIMITED | 02411759 | 31/03/1992 | 12/04/1992 | Dissolved |
| CITY GREENWICH LEWISHAM RAIL LINK PLC | 03169276 | 11/11/1996 | 07/08/2001 | Dissolved |
| COASTAL CLEAR WATER LIMITED | NI030252 | 11/12/1995 | 17/03/1999 | Amber |
| Cabletel South Wales Investments Ltd | 03126738 | 04/04/1996 | 14/04/1997 | Dissolved |
| ESP PIPELINES LIMITED | 03405272 | 13/07/2000 | 27/12/2000 | Strike Off |
| HYDER INVESTMENTS LIMITED | 02898070 | 25/10/1994 | 26/01/2001 | Dissolved |
| HYDER LIMITED | 02366776 | 31/03/1992 | 15/09/2000 | Dissolved |
| Hyder Overseas Investments Ltd | 02906578 | 05/10/1994 | 30/03/2001 | Dissolved |
| KIER BUSINESS SERVICES LIMITED | 03679828 | 23/02/2000 | 07/12/2000 | Gold |
| Mellor & Baxter Ltd | 01962091 | 30/09/1991 | 01/12/1993 | Dissolved |
| NOVERA ENERGY GENERATION NO. 2 LIMITED | 02366593 | 04/06/1997 | 20/12/2000 | Amber |
| NTL SOUTH WALES LIMITED | 02857050 | 28/03/1996 | 07/10/1996 | Dissolved |
| Pen Y Fan Properties Ltd | 02805438 | 26/03/1993 | 25/01/1994 | Dissolved |
| Relpart Ltd | 03072868 | 22/04/1996 | 10/07/1996 | Dissolved |
| UK HIGHWAYS LIMITED | 03310615 | 14/04/1997 | 26/01/2001 | Gold |
| UK HIGHWAYS M40 (HOLDINGS) LIMITED | 02939644 | 26/08/1994 | 23/01/1998 | Silver |
| UK HIGHWAYS M40 LIMITED | 03045707 | 13/07/1995 | 31/07/1996 | Silver |
| UK HIGHWAYS MANAGEMENT SERVICES LIMITED | 03310620 | 14/11/1997 | 26/01/2001 | Gold |
| WELSH WATER ENTERPRISES LIMITED | 02366583 | 01/04/1992 | 26/09/1994 | Insolvent |