Comments by Karoline Leavitt come after allegations that Panorama documentary misled viewers with its editing of a Trump speech

Donald Trump’s press secretary has described the BBC as “100% fake news” and a “propaganda machine” in an outspoken interview that comes after allegations of bias at the broadcaster.

Karoline Leavitt, a senior White House official in the Trump administration, said watching BBC bulletins while on trips to the UK “ruins” her day, saying taxpayers were being “forced to foot the bill for a leftist propaganda machine”.

Leavitt’s comments came after MPs said the corporation had “serious questions to answer” about the way a speech by the US president was edited by a BBC Panorama documentary.

A document leaked to the Telegraph suggested that an episode of the current affairs programme “completely misled” viewers by splicing two parts of the speech together.