| Company Name | Company Number |
|---|---|
| Hachette UK Limited | 2020173 |
| Hodder & Stoughton Limited | 651692 |
| Headline Publishing Group Limited | 2782638 |
| Storyfire UK Limited | 7893911 |
| Hachette UK Distribution Limited | 03541391 |
| The Orion Publishing Group Limited | 2663988 |
| Octopus Publishing Group Limited |
3597451 |
| Little, Brown Book Group Limited |
23014585 |
| John Catt Educational Limited |
05762466 |
| Carlton Books Limited |
02625229 |