Several former contestants of 'The Apprentice' have spoken out against Donald Trump

Several former contestants on the US version of 'The Apprentice' have spoken out against Donald Trump, saying he "is not worthy" of becoming president.

They have criticised his leadership style, and said they fear that victory for him in November's election would lead to a deeply divided nation.

Mr Trump has dismissed the former reality stars as "failing wannabes".

Randall Pickett was the winner of season four: “Donald’s proposed policies and his principles or the apparent lack there of, make clear not only that he in unqualified to be president of the United States, but also that he is a danger to our country and the world.”