Editing Mazher Mahmood (section)

====Tulisa Contostavlos====
In 2014, Mahmood, posing as a film producer, invited ''X-Factor'' judge Tulisa Contostavlos to Las Vegas to discuss the possibility of her appearing in a film alongside Leonardo DiCaprio. In return for this part, she was to supply him with £800 pounds worth of cocaine. Tulisa agreed, and introduced Mahmood to a friend who sold him the drugs, in a secretly recorded meeting. Mahmood published his story and Tulisa was charged with facilitating a drug deal.

During her trial, Tulisa insisted that she had not intended for a drug deal to take place, recalling a conversation she had with a friend in Mahmood's car in which she expressed anti-cocaine views. Mahmood's driver Alan Smith gave a statement to police in which he confirmed this version of events. However, after a conversation with Mazher Mahmood he changed his story, saying he couldn't remember. When asked about it in court, Mahmood admitted to this conversation; however, this conflicted with evidence he had given earlier while under oath. The judge turned on Mahmood and accused him of tampering with witness evidence and then lying about it, leading to the collapse of the case.