| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Jomora Consulting Ltd | 04838470 | 19/07/2003 | Dissolved |
| Jomora Consulting Ltd | 04838470 | 19/07/2003 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AIRPORTS (UK) NO.2 LIMITED | 04283572 | 24/07/2006 | 22/12/2008 | Dissolved |
| AIRPORTS WORLDWIDE UK HOLDING LIMITED | 08705625 | 03/12/2013 | 28/08/2018 | Gold |
| BELFAST INTERNATIONAL AIRPORT LIMITED | NI027630 | 30/09/2013 | 28/08/2018 | Silver |
| BIRMINGHAM AIRPORT DEVELOPMENTS LIMITED | 02295119 | 01/04/2004 | 19/09/2007 | Gold |
| BIRMINGHAM AIRPORT HOLDINGS LIMITED | 03312673 | 01/04/2004 | 19/09/2007 | Silver |
| BIRMINGHAM AIRPORT LIMITED | 02078273 | 01/04/2004 | 19/09/2007 | Silver |
| BRISTOL AIRPORT (UK) NO.3 LIMITED | 05403024 | 22/04/2010 | 09/10/2013 | Amber |
| BRISTOL AIRPORT LIMITED | 02078692 | 22/04/2010 | 24/10/2014 | Gold |
| BRITISH AIRPORTS SERVICES LIMITED | 01990921 | 31/05/1998 | 31/08/2003 | Dissolved |
| DYNAMCO LIMITED | 02477864 | 07/01/2004 | 01/12/2005 | Dissolved |
| EASTBOURNE WATER LIMITED | 02679876 | 12/12/2003 | 01/12/2005 | Dissolved |
| EURO-HUB (BIRMINGHAM) LIMITED | 02403252 | 01/04/2004 | 19/09/2007 | Amber |
| FIRST CASTLE DEVELOPMENTS LIMITED | 02783202 | 01/04/2004 | 19/09/2007 | Bronze |
| HASTINGS WATER (UK) LIMITED | 04866247 | 18/02/2004 | 02/10/2006 | Amber |
| HEATHROW AIRPORT LIMITED | 01991017 | 02/09/1991 | 30/06/1997 | Silver |
| London Lee Valley Partnership Ltd The) | 03450962 | 26/02/1998 | 22/07/1999 | Dissolved |
| MACQUARIE INFRASTRUCTURE AND REAL ASSETS (EUROPE) LIMITED | 03976881 | 27/04/2004 | 17/11/2006 | Gold |
| MID SOUTHERN WATER LIMITED | 02635467 | 12/12/2003 | 01/12/2005 | Dissolved |
| MID-SUSSEX WATER LIMITED | 02569593 | 12/12/2003 | 01/12/2005 | Dissolved |
| NEWCASTLE INTERNATIONAL AIRPORT LIMITED | 02077766 | 09/02/2007 | 22/01/2009 | Gold |
| NIAL FINANCE LIMITED | 05958924 | 27/02/2007 | 22/01/2009 | Amber |
| NIAL GROUP LIMITED | 05959081 | 16/11/2012 | 27/01/2022 | Bronze |
| NIAL HOLDINGS LIMITED | 04184967 | 16/11/2012 | 27/01/2022 | Not Trading |
| NIAL INVESTMENTS LIMITED | 04185026 | 27/02/2007 | 22/01/2009 | Not Trading |
| OPTIMUM INFORMATION SYSTEMS LIMITED | 02895316 | 30/06/2005 | 01/12/2005 | Dissolved |
| REGIONAL & CITY AIRPORTS HOLDINGS LIMITED | 07192056 | 01/10/2022 | 29/10/2024 | Silver |
| SOUTH EAST WATER (HOLDINGS) LIMITED | 04771490 | 02/06/2004 | 01/12/2005 | Amber |
| SOUTH EAST WATER LIMITED | 02679874 | 30/10/2003 | 03/10/2005 | Amber |
| SOUTH WEST AIRPORTS LIMITED | 05403045 | 22/04/2010 | 24/10/2014 | Silver |
| SOUTHERN UTILITIES (HOLDINGS) LIMITED | 02049449 | 30/10/2003 | 01/12/2005 | Not Trading |
| SOUTHERN UTILITIES LIMITED | 02246962 | 17/01/2004 | 01/12/2005 | Dissolved |
| STANSTED AIRPORT LIMITED | 01990920 | 01/07/1997 | 31/03/2002 | Silver |
| WATERCALL LIMITED | 02290091 | 17/01/2004 | 01/12/2005 | Dissolved |
| WEST KENT WATER LIMITED | 02679875 | 12/12/2003 | 01/12/2005 | Dissolved |