Hunter S Thompson would be 'proud' of The Rum Diary, says Johnny Depp

Johnny Depp said he felt "good" as he unveiled his new film, The Rum Diary, in London.

The 48-year-old Pirates Of The Caribbean star also insisted at the movie's European premiere at Odeon Kensington that the late Hunter S Thompson would have been impressed with the actor's work on the novel.

"I believe that Hunter would be very proud, yeah. He would probably try to hurt us a little bit with a sarcastic remark or whatever, but he would have been proud," he said.

It is the second time that Depp - who also produced the film - has portrayed the late gonzo journalist, who was also his close friend until his death in 2005, following his performance in Fear And Loathing In Las Vegas.

In pictures: Rum Diary premiere

"There's more responsibility but there's also more fun in doing this," he admitted.

"He is someone I cared about, and still care about, and the main thing I wanted was to make him proud."

His co-star Amber Heard - who showed off her figure in a clinging sequinned dress by Alessandra Rich teamed with Christian Louboutin heels - described Depp as "wonderful".

"It was a dream job. Johnny has an intimate connection with the material and is wonderful to work with. I noticed that everyone would smile when he walks on set," she said.

About their kissing scenes, she joked: "His lips are professional!"

The Rum Diary, directed by Bruce Robinson, opens in cinemas on Friday November 11.