But how much Potter detail have you absorbed from the blanket coverage? Test your knowledge in our Pottermania quiz.

Who was first choice for the part of Gilderoy Lockhart (professor of Defence Against The Dark Arts, played by Kenneth Branagh), but reportedly refused to dye his hair blonde?

A: Rik Mayall B: Hugh Grant C: Vinnie Jones

A range of six Harry Potter coins featuring scenes from the new film are legal tender where?

A: The Channel Islands B: Gibraltar C: The Isle Of Man

Which creature is at the centre of a Potter pet craze that is worrying conservationists?

A: Snake B: Owl C: Cat

JK Rowling is considering legal action against the writer of stories about a girl called Tanya Grotter because of alleged similarities with her books. What nationality is the author?

A: German B: Hungarian C: Russian

The late Richard Harris, who played Prof. Albus Dumbledore, had a 1960s chart hit with which psychedelic song?

A: MacArthur Park B: Itchycoo Park C: Parklife

Bestsellers in Australia and New Zealand normally peak at about 300,000 sales. But how many copies did the Potter book shift?

A: 1.5m B: 3.5m C: 5.5m

A series of gaffes have already been spotted by Potter fans in the film�s trailers. In one of them, Harry is seen writing in Tom Riddle�s diary but the reflection in his glasses shows something different. Is it�

A: Hogwarts Castle B: Ron Weasley playing chess C: A photo of Harry and his parents

What Potter-related toy is expected to be the biggest seller at London toystore Hamley�s this Christmas?

A: Harry Potter Magic Set B: Harry Potter Lego C: Harry Potter's Who Wants To Be A Millionaire?

John Colyer, 48, of Leeds, Kent, owns the Ford Anglia that features in the new film. How much did John pay for it?

A: �500 B: �1,500 C: �2,500

Nicolas Flamel, a 14th century amateur alchemist who inspired the Potter sorcerer, practised in which European city?

A: Paris B: Copenhagen C: Prague