Former X-Factor judge Tulisa Contostavlos has today been convicted of assaulting a celebrity blogger at a music festival.

An undercover reporter has told a court he wanted to "expose criminality" about an alleged drug deal involving Tulisa Constostavlos and it was "outrageous" to suggest he spiked the singer’s drink during one of their meetings.

Former X Factor judge Tulisa Contostavlos helped to supply cocaine to an undercover reporter who promised he could help the singer crack the movie business, a court has heard.

Former N-Dubz singer Dappy told police he slapped a man in self-defence as he lived in constant fear he might be stabbed, a court has heard.