UK folks get the 'Wizards Companion' book with standard edition preorder.
Polynauts in the UK who were ordering the limited edition of Ni No Kuni can save* a few quid if you're only looking for the 300 page hardback wizards book.
Preordering the regular edition at Game nets you that special book, might have to have a word with my lady to see if we can stretch to another long JRPG ;)
Source: Game
*I'm not Prinny - but boy this is a good deal!