Tulisa Contostavlos: 'the real liar has been exposed' - video

Tulisa Contostavlos speaks at Southwark Crown Court after a drugs case against her collapsed. The judge dismissed the jury due to evidence suggesting Mazher Mahmood, formerly of the Sun newspaper, had lied in the witness stand. Mahmood, also known as the 'fake sheikh' alleged Contostavlos set up an £800 cocaine deal between him and her friend