| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Mowlem International (Australasia) Ltd | 02509714 | 01/05/1992 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BURGHFIELD SAILING COMPANY LIMITED | 02134319 | 19/11/2015 | 17/01/2020 | Amber |
| Barclay Mowlem Overseas Ltd | 02354496 | 01/05/1992 | 31/10/1996 | Dissolved |
| CARILLION MENA LIMITED | 00398443 | 01/05/1992 | 31/10/1996 | Insolvent |
| CITY GREENWICH LEWISHAM RAIL LINK PLC | 03169276 | 06/09/1996 | 24/12/2003 | Dissolved |
| Carillion (Uganda) Ltd | 01622551 | 01/05/1992 | 31/10/1996 | Dissolved |
| EASTBURY PARK (HOLDINGS) LIMITED | 05839839 | 21/02/2008 | 18/11/2010 | Amber |
| EASTBURY PARK LIMITED | 05839649 | 21/02/2008 | 18/11/2010 | Amber |
| John Mowlem International (Construction) Ltd | FC011879 | 31/12/1995 | 31/10/1996 | Dissolved |
| OMCO FINANCIER LIMITED | 03210103 | 27/09/1996 | 04/04/2000 | Dissolved |
| ROAD MANAGEMENT SERVICES (A13) HOLDINGS LIMITED | 03917652 | 29/05/2008 | 27/04/2011 | Silver |
| ROAD MANAGEMENT SERVICES (A13) PLC | 03917644 | 29/05/2008 | 27/04/2011 | Silver |
| THE CARILLION CONSTRUCTION COMPANY (EAST AFRICA) LIMITED | 00775010 | 01/05/1992 | 31/10/1996 | Insolvent |
| THE GORDON FOUNDATION | 00027272 | 21/02/1991 | 14/01/2017 | Silver |
| THE HOSPITAL COMPANY (OXFORD JOHN RADCLIFFE) HOLDINGS LIMITED | 04868468 | 26/03/2008 | 21/08/2008 | One Red Flag |
| THE HOSPITAL COMPANY (OXFORD JOHN RADCLIFFE) LIMITED | 04868478 | 26/03/2008 | 21/08/2008 | Bronze |
| THE HOSPITAL COMPANY (QAH PORTSMOUTH) HOLDINGS LIMITED | 05440243 | 26/03/2008 | 30/06/2010 | Silver |
| THE HOSPITAL COMPANY (QAH PORTSMOUTH) LIMITED | 05439918 | 26/03/2008 | 30/06/2010 | Silver |