They're worried about the smell, the noise, and the vegetarian hairdressers they profess to employ. People appear to be too scared to object to the cruelty inherent in this kind of slaughter except anonymously. Are they fearful they might be halal'ed themselves?
Translation - permission won't be needed as the place was once a butcher's but, er, the EDL might get involved. As for the animals, they can go to hell.