It is very difficult to ship a bulldog by air. Not airlines will not take them as there is a very high risk of death due to inherent breathing difficulties with the breed. That is not to say it's not possible, but it is a serious risk, and many airlines protect themselves against it by declining to accept bulldogs and other snub-nose breeds. At one point, Cathay was accepting them, and for a while ANZ was... I don't know the current status of airlines from the UK, but when we shipped our dog and booked we had to return a disclaimer stating, amongst other things, it wasn't a bulldog or other snub-nose breed.
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