Leaked documents detail for the first time China’s systematic brainwashing of hundreds of thousands of Muslims in a network of high-security prison camps.
The Chinese government has consistently claimed the camps in the far western Xinjiang region offer voluntary education and training.
But official documents, seen by BBC Panorama, show how inmates are locked up, indoctrinated and punished.
China’s UK ambassador Liu Xiaoming dismissed the documents as fake news. He said the measures had safeguarded local people and there had not been a single terrorist attack in Xinjiang in the past three years.