| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Construction Services (S E) Ltd | 02983180 | 01/10/1998 | Dissolved |
| R. S. R. Building Developments Ltd | 03112907 | 16/07/1996 | Dissolved |
| Response Rail Services Ltd | 04379062 | 21/02/2002 | Dissolved |
| Walker Civil Engineering Ltd | 03221604 | 08/07/1996 | Dissolved |
| Walker Rail Services Ltd | 03221623 | 08/07/1996 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Construction Services (S E) Ltd | 02983180 | 30/09/1997 | 30/09/1998 | Dissolved |
| KIN UK LIMITED | 03165883 | 28/02/1996 | 01/03/2003 | Dissolved |
| MALTHOUSE HILL MANAGEMENT LIMITED | 04878353 | 27/08/2003 | 25/01/2005 | Amber |
| SRS MANAGEMENT LIMITED | 03224744 | 15/07/1996 | 16/03/1998 | Gold |
| Star Plant Ltd | 01543875 | 20/03/1992 | 16/03/1998 | Dissolved |