Khan, who is Muslim, suggested that Corbyn's refusal to sing the National Anthem showed he was unfit to be Prime Minister....
And he denounced the Labour leadership duo's links to terror groups. He said McDonnell's claim that IRA killers should be 'honoured' could encourage terrorism in London, and Corbyn's support for Arab extremist groups could inspire anti-Semitic attacks.
Khan's comments were echoed by fellow Labour MP Chuka Umunna, whose Streatham constituency includes Brixton, hit by riots in the 1980s.
Khan said anyone aspiring to be Prime Minister should sing the Anthem. He said he sang it regularly and spoke with pride of kissing the Queen's hand when he was made a Privy Counsellor in a ceremony the Labour leader is threatening to boycott.