LONDON: Final Harry Potter book’s secret film script was abandoned in a pub, thanks to the movie’s crew who went on a bender, it has emerged.

The script — marked ‘Private and Confidential’ — which contains 118 pages reveal changes from novel The Deathly Hallows.

A reader gave it to The Sun who found it at a boozer in Kings Langley, Herts. It was spotted under a table.

The British tabloid handed back the script to Warner Bros. The lost notes reveal how film chiefs have made dramatic changes from JK Rowling’s book. The Sun reader who found the script said, “I couldn’t believe my eyes. I know guys that work on the film drink in the pub, but it’s very embarrassing that someone could just leave it there.”

A Warner Bros spokesman said, “We are grateful to The Sun for the safe return of this script.”