A new version of the Harry Potter encyclopaedia which brought multi-millionaire author JK Rowling to the verge of tears will go on sale in the UK later this month.

THE battle over the publication of a Harry Potter encyclopaedia “decimated” JK Rowling’s creativity and halted all work on a new novel, the author said yesterday.

The battle over the publication of a Harry Potter encyclopaedia will be heard in a New York court today.

A planned Harry Potter encyclopedia has been delayed after the publisher was sued by writer J.K. Rowling.