| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Avidacre Limited | 02634171 | 01/03/2000 | Dissolved |
| Bookseller Publications Limited | 02427859 | 01/03/2000 | Dissolved |
| Booktrack Ltd | 02778627 | 01/03/2000 | Dissolved |
| J. Whitaker & Sons Ltd | 01697041 | 01/03/2000 | Dissolved |
| Sporting Handbooks Limited | 00655027 | 01/03/2000 | Dissolved |
| Teleordering Ltd | 01019181 | 01/03/2000 | Dissolved |
| The Standard Book Numbering Agency Ltd | 00881964 | 01/03/2000 | Dissolved |
| Whitaker Bibliographic Services Ltd | 00958044 | 01/03/2000 | Dissolved |
| Whitaker Business Publishing Ltd | 03637862 | 01/03/2000 | Dissolved |
| Whitaker Information Services Ltd | 03392223 | 01/03/2000 | Dissolved |
| Whitaker Limited | 02828579 | 01/03/2000 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| NIELSEN BOOK SERVICES LIMITED | 00070437 | 04/01/2000 | 01/01/2004 | Silver |
| VNU ENTERTAINMENT MEDIA UK LIMITED | 00531512 | 01/05/2001 | 31/10/2005 | Dissolved |