| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| HORIZON DEBTCO LIMITED | 09810050 | 12/09/2019 | Silver |
| HORIZON GROUP HOLDCO LIMITED | 13008348 | 10/11/2020 | Bronze |
| HORIZON GROUPCO LIMITED | 09810091 | 12/09/2019 | Silver |
| HORIZON HOLDCO LIMITED | 09810016 | 12/09/2019 | Silver |
| HORIZON MIDCO LIMITED | 09810120 | 12/09/2019 | Bronze |
| TRAINLINE PLC | 09347437 | 11/12/2014 | Dissolved |
| Valuebet Ltd | 03765304 | 05/05/1999 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| 1854 MEDIA LIMITED | 08361351 | 01/10/2016 | 25/09/2019 | Amber |
| 75-79 YORK STREET LIMITED | 05138134 | 29/03/2007 | 25/04/2022 | One Red Flag |
| ADVANCED SMARTCARD TECHNOLOGIES LIMITED | SC293461 | 31/07/2007 | 13/11/2012 | Dissolved |
| ECEBS GROUP LIMITED | 03974523 | 31/07/2007 | 13/11/2012 | Dissolved |
| ECEBS LIMITED | 03974521 | 31/07/2007 | 13/11/2012 | One Red Flag |
| HORIZON BIDCO LIMITED | 09810071 | 12/09/2019 | 19/04/2023 | Amber |
| HORIZON NEWCO LIMITED | 09958640 | 12/09/2019 | 19/04/2023 | Dissolved |
| MULTEFILE LIMITED | 03974526 | 31/07/2007 | 04/03/2014 | Not Trading |
| PHOTO HOLDCO LIMITED | 12170442 | 22/08/2019 | 19/04/2023 | Amber |
| PHOTOBOX FREE PRINTS LIMITED | 11861157 | 12/09/2019 | 19/04/2023 | Not Trading |
| PHOTOBOX HOLDCO ALPHA LIMITED | 07648619 | 12/09/2019 | 19/04/2023 | One Red Flag |
| PHOTOBOX HOLDCO BETA LIMITED | 07648795 | 12/09/2019 | 19/04/2023 | Silver |
| PHOTOBOX HOLDCO GAMMA LIMITED | 07674401 | 26/09/2019 | 19/04/2023 | Dissolved |
| PHOTOBOX HOLDCO LIMITED | 07648443 | 26/09/2019 | 19/04/2023 | Dissolved |
| PHOTOBOX LIMITED | 03906401 | 12/09/2019 | 19/04/2023 | One Red Flag |
| QJUMP LIMITED | 04124436 | 27/07/2004 | 24/06/2016 | Bronze |
| TRAINLINE GROUP INVESTMENTS LIMITED | 05822219 | 09/06/2006 | 24/06/2016 | Dissolved |
| TRAINLINE HOLDINGS LIMITED | 03886253 | 27/07/2004 | 24/06/2016 | Dissolved |
| TRAINLINE INTERNATIONAL LIMITED | 06881309 | 20/04/2009 | 24/06/2016 | One Red Flag |
| TRAINLINE INVESTMENTS HOLDINGS LIMITED | 05776685 | 09/06/2006 | 24/06/2016 | Dissolved |
| TRAINLINE JUNIOR MEZZ LIMITED | 05820853 | 09/06/2006 | 24/06/2016 | Dissolved |
| TRAINLINE RAIL ENQUIRY SERVICES LIMITED | 04547908 | 27/07/2004 | 24/06/2016 | Dissolved |
| TRAINLINE SHORT BREAKS LIMITED | 04832016 | 27/07/2004 | 24/06/2016 | Dissolved |
| TRAINLINE.COM LIMITED | 03846791 | 27/07/2004 | 24/06/2016 | Bronze |
| VICTORIA INVESTMENTS BIDCO LIMITED | 09395162 | 20/03/2015 | 24/06/2016 | Dissolved |