Seven secrets.

Harry Potter and the Deathly Hallows...

1 Is the first Harry Potter film in which ­Hogwarts School of Witchcraft and Wizardry is not seen at all.

2 Became the first two-part Harry Potter film, as the scriptwriter Steve Kloves found it impossible to fit all the ­elements of the book into a single story.

3 Required Daniel Radcliffe to impersonate six actors as their characters took a Polyjuice Potion, which made them look like Harry Potter. The scene — which took three days and 100 takes to shoot — ends with seven Harry Potters in the same room, at the same time, all played by Radcliffe.

4 Features a chase between evil Death Eaters and the motorbike and sidecar ­containing Hagrid and Harry, which was filmed in the Dartford and Mersey ­Tunnels in East London and Liverpool.

5 Brought traffic to a standstill in London’s Piccadilly Circus when a scene was shot there. Although ­filming took place before dawn, ­hundreds of Potter fans turned up.

6 At one point in the film, Harry, Ron and Hermione end up in a London diner. On the wall is a poster from Equus: the play in which Daniel Radcliffe starred as stable boy Alan — a role that required full nudity.

7 Ends at a cottage made of shells, on a beach in Pembrokeshire, Wales. The cottage was held down by water bottles, weighing several tons each, to stop it blowing away.

LOL!