Angelina Jolie has told how her on-screen appearances will take more of a back seat as she concentrates more on her charity commitments and behind the scenes movie work.

The Hollywood star said her role as a special envoy for the United Nations' High Commissioner for Refugees and the Preventing Sexual Violence Initiative (PSVI) - which she helped to launch with Foreign Secretary William Hague - would be among her prime areas of focus.

She was speaking at a press conference in London to launch her latest film Maleficent, in which she stars as the Sleeping Beauty sorceress.

The 38-year-old had previously attended a preview of an exhibition of costumes from the Disney film - her first movie appearance for four years - at Kensington Palace.

And today (May 9) she suggested her acting roles would continue to be few and far between.

The mother of six, whose five-year-old daughter Vivienne makes her screen debut in the film, said of her acting: "It's going to be taking more of a back seat. I've had a wonderful career and I'm very happy to have had all the opportunities to tell stories and work for as long as I have.

"I'm sure there will be a few more films but I am happy I am able to be selective and have fun with characters like this but I would like to focus on writing and directing and above all I would like to focus more on my work with the UN and PSVI."

Maleficent, which also stars Lesley Manville, Juno Temple, Imelda Staunton and Sharlto Copley, opens in cinemas on May 28.