Britain's Ministry of Defence sent serving Royal Air Force pilots to China to teach a course to their Chinese counterparts and allowed Chinese nationals to study at UK military colleges, Sky News can reveal. Up to four frontline pilots took part in the 'Aviation English Course' in Beijing that ran in 2016, while at least three Chinese nationals have gone through basic officer training at the RAF's college at Cranwell in Lincolnshire. The most recent Chinese officer is thought to have attended the college in 2019 – a time when the UK and its closest ally, the United States, under…