There are exclusive clips of Harry’s first kiss with his new girlfriend, Ginny Weasley, Ron Weasley’s sister, and Daniel Radcliffe talks about filming the scenes and how Harry handles going out with his best friend’s sister.

Daniel Radcliffe and Rupert Grint reveal they corpsed repeatedly during a romantic scene between Harry and Ginny Weasley, Ron's sister:

Dan: "We must have done it 20 times, because we couldn't stop laughing. Me and Rupert are still pretty terrible at corpsing. I've got a lot better, but Rupert's awful..."

Rupert: "It does get annoying. I've ruined so many takes and there's just no reason for it, I can't explain it, it's so annoying. I feel really bad, 'cos the day just goes on and on."

Rupert Grint discusses Ron’s new love interest, Lavender, and the seven girls who were screen tested for the part.

And Emma Watson reveals that her character, Hermione, is less than impressed with Lavender and realises her own true feelings for Ron – will the characters have a happy ending?

Emma says: "Hermione's a mess in this film. She's not the best in Potions any more because Harry's got this special book. Ron's off snogging Lavendar somewhere and that's kind of rubbish. She's getting all these feelings and she doesn't really know how to deal with them. She's definitely out of her depth."

There is also a shock in store when Ron Weasley tries his hand at Quidditch for the first time -and is surprisingly successful. Rupert describes being hung from a harness and bouncing on a trampoline to film the scenes against a blue screen and Daniel tells Ben how painful it is to balance on a broomstick. The tricks to filming the fictional sport are revealed by the stunt team before Ben gives it a go himself.

Daniel says: "There's no secret to Quidditch, other than for a man, if you imagine sitting on a bicycle and taking your feet off the peddles, just hanging there and leaning forward, with all the repercussions that has - then you get an idea of what it's like. Balance is difficult and also certain very important organs are crushed."