Producer reveals 'Potter' omissions

The movie adaptation of Harry Potter And The Half-Blood Prince will not feature a number of key plot points from the book.

According to producer David Heyman, the battle at Hogwarts and Dumbledore's funeral will not be included in the sixth film in the series.

He told website SnitchSeeker that bosses felt they would risk dampening the impact of the battle at the climax of the seventh movie if they included another in the previous film.

"The reason why we left out the battle at Hogwarts is because we have a battle at Hogwarts in the seventh film and we are avoiding repetition," he said.

On Dumbledore's funeral, Heyman remarked: "We decided that while we loved it, what we came up with was the right ending for the film that we had made."

Earlier this year, Harry Potter author J.K. Rowling wrote an 800-word prequel to the series, which was later auctioned for charity.