| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CORINIUM TRANSPORT ADVISERS (CTA) LIMITED | 06882193 | 20/04/2009 | Dissolved |
| POSITIVE IMPACT MANAGEMENT SOLUTIONS LTD | 08505822 | 26/04/2013 | Dissolved |
| ROMNEY HYTHE & DYMCHURCH RAILWAY PUBLIC LIMITED COMPANY | 01031179 | 24/01/2019 | Dissolved |
| Resurgence Railway Holdings Ltd | 03111945 | 24/11/1995 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CROSSRAIL LIMITED | 04212657 | 01/08/2001 | 20/09/2001 | Gold |
| FORMER IRO | 03923542 | 08/02/2000 | 01/07/2004 | Dissolved |
| NE NO. 3 LIMITED | 02938993 | 14/01/2002 | 16/01/2004 | Not Trading |
| NORTHERN TRAINS LIMITED | 03076444 | 20/10/1999 | 13/09/2001 | Bronze |
| SE TRAINS LIMITED | 03266762 | 20/10/1999 | 13/09/2001 | Silver |
| SILVERLINK TRAIN SERVICES LIMITED | 03007935 | 14/01/2002 | 16/01/2004 | Not Trading |
| SOUTH EASTERN TRAINS LIMITED | 03666306 | 20/10/1999 | 13/09/2001 | Dissolved |
| SOUTH WESTERN RAILWAY LIMITED | 03266760 | 20/10/1999 | 13/09/2001 | Not Trading |
| South Eastern Trains (Holdings) Ltd | 03266770 | 20/10/1999 | 13/09/2001 | Dissolved |
| THE HERONS BROOK MANAGEMENT COMPANY LIMITED | 02167391 | 15/09/2005 | 15/03/2013 | Silver |
| WEST ANGLIA GREAT NORTHERN RAILWAY LIMITED | 03007944 | 14/01/2002 | 16/01/2004 | Not Trading |