By Martin Robinson Former N-Dubz singer Dappy slapped a man outside a nightclub because he feared  being stabbed after the clubber called him a 'mug' and said 'I'm going to knock you out', a court heard today. The 26-year-old, who is on trial under his real name Dino Costas Contostavlos, is accused of attacking George Chittock in a smoking area in the early hours of February 27 at Chicago's in Chelmsford. Dappy denies assault by beating at Chelmsford Magistrates' Court, where he was supported by his friend, comedian Jim Davidson, who met on Celebrity Big Brother. Scroll down for video
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Star, 26, says he was provoked by George Chittock after night out in Essex
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Singer claims Mr Chittock said: 'You're a mug, I'm going to knock you out'
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Court heard a friend of Mr Chittock tweeted: 'George started on Dappy'
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Defence also claim he also joked about the singer's father being dead
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Star said: 'I don't want my two kids knowing their father gets called a mug'
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Performer said case 'is a stitch up' and prosecution 'obviously don't like me'
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Jim Davidson supported Dappy in court after they met on Big Brother
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Comedian said: 'I don't know what's happened - I'm here to show support'
She said @placeholder claimed Mr Chittock had been abusive towards him earlier in the night and repeated this in the smoking area.