ThatBags, sorry my post was possibly not very clear.
Currently, halal slaughter most of the time is done without stunning. That is because in more traditional times, the only way to stun was with a blow to the head- which is specifically haram, or forbidden, according to the Koran (see my previous link re. Abraham meat producers)- so no stunning is the traditional way.
But, and it is a big and important but- animals can now be stunned electrically, with tongues appied to the head- it renders the animal unconscious for long enough for the throat to be slit the halal way- without suffering. Now, most traditional Muslims do NOT accept this as the proper islamic way - despite the approval of the method by the Islamic Foundation and the Halal food authorities.
So, instead of calling for an outright ban- which will cause huge friction and problems, and will be seen (in many instances) as racist and anti-islam (and hypocritical as the standards in UK slaughter houses are definitely not perfect at all)- why not push forwards the fact that there is a good and humane option, which does NOT contradict the Koran. And push for this to be accepted. It would be much more likely to succeed- and at the end of the day, isn't it what we want (or is it just another excuse for causing trouble with the Islamic community- which I suspect is, for some).
Does that help?