Animal Welfare (Non-stun Slaughter)

I am genuinely interested in the right hon. Gentleman’s speech, and I bow to his far superior knowledge of the subject. May I ask him about the head-only electrical stun? I have been told by animal welfare groups that, under UK law, sheep only have to have one artery, rather than both arteries, cut, which often means that, because the electrical stun only lasts between 20 and 40 seconds, there is a good chance that a sheep will recover consciousness before it bleeds to death. Will he enlighten me as to whether that is the case? I have been told that, even though they have been stunned, some 4 million sheep a year recover consciousness before their throats are cut.