The horrific halal slaughter video and a troubling question: As we reveal 200m animals a year are killed by having their throats cut while still conscious, how so many are eating it without realising. Special report by SUE REID ⊖⊖

A sound system blasts out a ­hideous recording of howling wolves as a terrified lamb tries to jump a steel barrier to escape a slaughterman who is about to slit its throat in an English abattoir.