K-Stew misses On The Road premiere

Kristen Stewart's latest film On The Road has received a low-key UK premiere in the absence of its leading female.

The Twilight actress caused a stir last month when it emerged she had cheated on her boyfriend Robert Pattinson with married director Rupert Sanders, and did not fly to London to promote the film, based on Jack Kerouac's 1957 book of the same name.

Organisers insisted the actress never planned to attend and rolled out the red carpet at Somerset House for her British co-stars Sam Riley, Tom Sturridge and Danny Morgan.

Danny said it was "sad" Kristen was not with them, while Sam said he had "no idea" how the beleaguered actress was doing.

"It's none of my business," he said.

Sam plays the protagonist and narrator, based on Kerouac himself. Dressed casually in trousers and a denim jacket, he admitted he was feeling the pressure ahead of the film's release.

"The book is well loved the world over. People have their own feelings about it and how it ought to look and you're bound to disappoint half of them," he said.

Tom, who welcomed a baby daughter with girlfriend Sienna Miller just five weeks ago, turned up to the Film4 Summer Screen event in a suit and beanie hat.

The actor, who is a good friend of R-Patz, said: "I don't talk about my friends behind their back."

On The Road, which is produced by Francis Ford Coppola, is out in October. The premiere launched the 2012 Film4 Summer Screen at Somerset House, which is part of the American Express Preferred Seating programme. For more information visit Amex.co.uk/potential