On 1 December 2019, Marr interviewed British Prime Minister Boris Johnson and discussed Islamic terrorist Usman Khan, perpetrator of the 2019 London Bridge stabbing. Marr claimed the government had done nothing since 2010 to tighten the rules on sentencing for terrorist offences, implying that Johnson could have stopped Khan's early release. In reality, Johnson's government had lengthened the minimum early release, and in Khan's case any legislation would have need to be retrospective anyhow. The BBC Editorial Complaints Unit therefore found that Marr had misled viewers on two counts.