| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Cairnryan Lairage Co Ltd | NI020959 | 01/06/2004 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| LARNE HARBOUR LIMITED | R0000472 | 01/06/2004 | 15/12/2009 | Silver |
| NORTHWARDS LTD. | SC225409 | 11/01/2002 | 30/09/2002 | Bronze |
| P & O SCOTTISH FERRIES LIMITED | 00071375 | 13/05/1992 | 27/08/2010 | Amber |
| P&O EUROPEAN FERRIES (IRISH SEA) LIMITED | 00318227 | 29/07/2004 | 31/12/2009 | One Red Flag |
| P&O EUROPEAN FERRIES (PORTSMOUTH) LIMITED | 00801658 | 01/02/2008 | 01/07/2009 | One Red Flag |
| P&O FERRIES HOLDINGS LIMITED | 06038077 | 01/03/2007 | 01/07/2009 | One Red Flag |
| P&O FERRIES LIMITED | 00237626 | 25/03/2008 | 01/07/2009 | One Red Flag |
| P&O FERRIES THAMES LIMITED | 06860796 | 27/03/2009 | 01/07/2009 | Bronze |
| P&O NORTH SEA FERRIES LIMITED | 00809079 | 01/02/2008 | 01/07/2009 | One Red Flag |
| P&O SCOTTISH FERRIES SHIP MANAGEMENT LTD. | SC010350 | 18/12/1992 | 14/09/2010 | Not Trading |
| P&O SHORT SEA FERRIES LIMITED | 03291852 | 01/02/2008 | 01/07/2009 | One Red Flag |
| P.& O.PENSION FUNDS INVESTMENTS LIMITED | 00382817 | 09/03/1999 | 01/04/2005 | Not Trading |
| PORT OF CAIRNRYAN LIMITED | 04914754 | 09/10/2003 | 31/12/2009 | Bronze |
| WORKSTRINGS INTERNATIONAL LIMITED | 01083092 | 30/08/1993 | 25/07/1996 | Silver |