Proud of the role that his grandmother, Princess Alice of Greece, played during the Second World War, the Prince of Wales is to appear in a film that will tell the stories of 12 figures who helped save Jews from the Nazis.

In The Rescuers: Heroes of the Holocaust, Prince Charles praises the "very remarkable" mother of the Duke of Edinburgh, who hid Jews in the royal palace in Athens and withstood interrogations by German officials.

The film, which says the 12 gentiles helped to save an estimated 200,000 European Jews, has been produced by Sir Martin Gilbert, the historian, Michael King, a film maker, and Stephanie Nyombayire, a Rwandan human rights activist.