Warner Brothers decided to split the seventh book in JK Rowling’s series into two parts as it was impossible to cram its 608 pages into a single film.

Harry Potter and the Deathly Hallows: Part I is set to be released on 19 November 2010.

Stuntman David Holmes suffered serious back injuries on the set of Deathly Hallows last month practising an aerial sequence.

The set was closed for a week for investigation before being allowed to re-open by the Health and Safety Executive.

It was announced in August last year that the release date for Harry Potter and the Half-Blood Prince would be pushed back eight months to July this year.

Warner Bros president Alan Horn said the decision was taken to guarantee the studio a major summer blockbuster in 2009.

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