Labs are one of the least suitable breeds to have here, that's why they are English. I saw one die last summer after he had been for a short walk with his owner, their constitution is just not compatible with the heat. I know they are the height of fashion at the moment but you may end up with a very expensive vets bill and an out of fashion dog. As they are so sought after at the moment, lots of people are buying them from the pet shops. They usually come from Egypt and from all the ones we saw last year, none of them scored on hip and eye, meaning that, especially as most had grossly deformed hips, they would die after 10,000QR of surgery to correct it.
I know you "need" one and I am sure you are a really nice person and an excellent pet owner but maybe you could just speak to QAWS about it, they have received many labs and lab crosses