| Name | Company Number | Date Appointed | Rating |
|---|
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| 42 HEYFORD AVENUE LIMITED | 09420521 | 11/07/2016 | 05/01/2021 | Silver |
| DOVE BROTHERS LIMITED | 01521211 | 27/05/1997 | 01/04/2011 | Dissolved |
| LAING O'ROURKE DELIVERY LIMITED | 04309402 | 28/08/2008 | 20/07/2010 | Amber |
| LAING O'ROURKE HOLDINGS LIMITED | 04222533 | 01/11/2001 | 19/10/2010 | Silver |
| LAING O'ROURKE INFRASTRUCTURE LIMITED | 04309441 | 01/11/2001 | 19/10/2010 | Gold |
| LAING O'ROURKE UTILITIES LIMITED | 04309417 | 02/05/2006 | 01/04/2011 | Gold |
| LAING O'ROURKE WALES & WEST LIMITED | 04309445 | 23/10/2001 | 02/05/2006 | Amber |
| Laing O'Rourke (Merseytram) Ltd | 05503469 | 06/10/2005 | 01/03/2007 | Dissolved |
| MAXIM INVESTMENTS LIMITED | 00860964 | 06/10/1994 | 31/05/1997 | Insolvent |
| MERSEYTRAM 2006 LIMITED | 05503299 | 06/10/2005 | 25/09/2016 | Dissolved |
| O'ROURKE CIVIL ENGINEERING LIMITED | 02810023 | 27/05/1997 | 01/04/2011 | Gold |
| R.O'ROURKE & SON LIMITED. | 02671992 | 01/03/1998 | 28/03/2002 | Amber |
| ZETA-FORM GROUP HOLDINGS LTD. | 02558967 | 31/03/2000 | 01/04/2011 | Dissolved |
| ZETA-FORM LIMITED | 02318980 | 08/09/1998 | 01/04/2011 | Dissolved |