Young Harry Potter fans will have to be accompanied by an adult to see the wizard's fourth movie outing.

The British Board of Film Classification has ruled that Harry Potter and the Goblet of Fire is unsuitable to carry the PG certificate bestowed upon the previous films and has given it a 12A rating, as Rowling's storyline gets progressively darker.

A spokewoman for the BBFC is quoted as saying: "Younger viewers could be frightened by some of the more intense scenes... At 12A we allow moderate level violence, but without focus on injuries or blood."

However, thanks to the higher certificate the entire 157 minute-long film has been passed without the need for any cuts.

Goblet of Fire will be released on November 18.