Rupert Grint, Emma Watson and Daniel Radcliffe at the Harry Potter and the Half-Blood Prince film photocall

Rupert Grint, Emma Watson and Daniel Radcliffe

Rex

The young stars of the Harry Potter movie arrived at Claridges in London dressed casually and looking happy in anticipation of the premiere of Harry Potter and the Half Blood Prince, the sixth in the Harry Potter series.

Ever the fashion savvy star, Emma Watson arrived in an ensemble by hip New York design duo, Proenza Schouler. As the young actors fielded questions from the press, there was talk of romance between the starring trio, which, upsettingly for those of us who like a little off-screen romance, Emma Watson flatly denied;

"I think it would be of huge media interest if one of the three of us were hooking up - unfortunately, we don't have that story for you. Even among the other cast members there hasn't been anything like that. I'm sorry, it's really boring."

Not to worry, despite there being nothing to report there, it looks like the on-screen drama will more than make up for it; "this film is, to me, is more of a romantic comedy than ever before..." Emma told the collected press. "We have a chance to focus more on that side of things." Hermione, played by Watson, finds herself jilted by the object of her affections, Ron Weasley, as he embarks on a relationship with her rival, Lavender.

Watson, Radcliffe and Grint were joined by cast members including Michael Gambon, who plays chief wizard Albus Dumbledore, Jim Broadbent who takes on the role of new Hogwarts professor Slughorn and Tom Felton aka Harry Potter's arch rival, Draco Malfoy.

There was a sombre element to the proceedings as the actors remembered murdered cast member Rob Knox who died following a stabbing incident outside a London bar last year. Tonight, as they walk the red carpet at the world premiere, each actor will wear a white ribbon around their wrist in Knox's memory. Bonnie Wright, who plays Ginny Weasley in the film, said: "We wanted to wear a white ribbon wristband as a mark of respect. It is also a tribute to anybody who has been the victim of a senseless, stupid tragic crime like this."

See all the pics from the Harry Potter and the Half-Blood Prince Premiere here

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By Pat McNulty