Angelina Jolie makes Pakistan appeal.

Speaking to London's Heart Angelina Jolie, actress and United Nations ambassador, says she and Brad Pitt will do all they can to keep the flooding disaster in Pakistan in the headlines.

She used the premiere of her new film Salt in Leicester Square last night to urge Londoners to contribute to the relief effort which is now helping 20 million people.

The actress says she and Brad Pitt plan to visit the region affected.